- Are you confused about when to use “log in” versus “log on”?
- Do you know the specific phrases used to describe recording data or work hours?
- Have you ever wondered why native speakers say they “slept like a log”?
In English, the word log is incredibly versatile, moving from the natural world of timber to the digital world of software and data. Mastering log collocations is essential for achieving natural fluency, as it helps you move beyond basic vocabulary and start using precise, professional, and idiomatic expressions used by native speakers every day.
Common Collocations with Log as a Verb
Digital & Technical Actions
In the digital age, these are the most frequent collocations you will encounter.
- Log in / Log into: To enter a restricted area of a website or app.
Example: You need to log in to your account to see the dashboard. - Log out / Log off: To end a session on a computer or website.
Example: Always log out of public computers to protect your privacy. - Log on / Log onto: Often used interchangeably with “log in,” though sometimes implies connecting to a network.
Example: I couldn’t log onto the company server this morning.
Recording Information & Data
These collocations are vital for business, science, and productivity contexts.
- Log hours: To record the amount of time spent working.
Example: Freelancers must log hours accurately to get paid. - Log data: To record information or statistics systematically.
Example: The sensor is designed to log data every thirty seconds. - Log a complaint: To formally record a grievance or protest.
Example: Several customers have logged a complaint about the new interface. - Log miles / Log distance: To record travel, often for fitness or business expenses.
Example: She logged over 50 miles of running last month.
Essential Collocations using Log as a Noun
Official Records
When “log” is a noun, it usually refers to a systematic record of events.
- Keep a log: To maintain a continuous record.
Example: The captain must keep a log of everything that happens at sea. - Activity log: A list of actions or events that have occurred.
Example: Check the activity log to see who accessed the file. - Ship’s log / Flight log: Specific records for maritime or aviation travel.
Example: The flight log showed no signs of mechanical failure.
Physical Objects & Idioms
These refer to the traditional meaning of a “log” (a piece of wood) or idiomatic uses derived from it.
- Log fire: A fire made using large pieces of wood.
Example: There is nothing better than sitting by a log fire in winter. - Sleep like a log: An idiom meaning to sleep very deeply and soundly.
Example: I was so tired after the hike that I slept like a log. - Fallen log: A tree trunk that has fallen to the ground.
Example: We sat on a fallen log to eat our lunch.
The Master Summary Table
| Collocation | Part of Speech | Quick Meaning |
|---|---|---|
| Log in | Verb (Phrasal) | To access a computer system. |
| Keep a log | Noun Phrase | To maintain a record of events. |
| Log hours | Verb Phrase | To record time spent on a task. |
| Sleep like a log | Idiom | To sleep very deeply. |
| Activity log | Noun Phrase | A record of past actions. |
| Log a complaint | Verb Phrase | To make a formal report of a problem. |
Common Mistakes: Natural vs Unnatural
| Do Not Say | Say This |
|---|---|
| I need to |
I need to log my hours. (or keep a log) |
| Please |
Please log in to the app. |
| I |
I slept like a log last night. |
| He |
He logged a complaint with HR. |
“After I logged in to the project management portal, I realized I had forgotten to log my hours for the previous week. I checked the activity log to verify when I had finished the design tasks. Once that was done, I went home, exhausted, and slept like a log for ten hours straight.”
Frequently Asked Questions about Log Collocations
What is the difference between “log in” and “log on”?
In modern English, there is almost no difference. “Log in” is slightly more common for websites and apps (e.g., “Log in to Facebook”), while “log on” is sometimes used for connecting to a network or a larger workstation. Both are perfectly acceptable in 2024.
Is “login” one word or two words?
This depends on the part of speech. Use two words for the verb: “I need to log in.” Use one word for the noun or adjective: “Enter your login details” or “The login failed.”
When should I use “log off” instead of “sign out”?
“Log off” is more common in technical or older computer contexts (like Windows), whereas “sign out” is the standard term used by most modern web applications like Google or Netflix. Both mean the same thing.
Can “log” be used for recording physical objects?
Yes, but it usually implies a formal or systematic list. You wouldn’t “log” a grocery list, but a scientist would log samples collected in the field, or a warehouse manager would log incoming inventory.
Is “sleep like a log” informal?
It is an idiom, so it is best used in casual or semi-formal conversation. In a professional medical report, you would say “the patient experienced deep, uninterrupted sleep,” but in an email to a colleague, “sleeping like a log” is perfectly fine.
Is 'log out of' also common, or just 'log out'? For example, 'I need to log out of my email account.'
Hi Ben! Yes, 'log out of' is very common and perfectly correct, especially when you want to specify *what* you are logging out from. Your example, 'I need to log out of my email account,' is very natural. You can use 'log out' on its own (e.g., 'Always remember to log out.'), or specify with 'of' (e.g., 'Log out of the system.'). Both are excellent!
My boyfriend always tells me I 'slept like a log' but I didn't know why! Now I can tell him it's because I'm so still. 😊 Great little linguistic fact!
Haha, that's a perfect everyday application of the idiom, Sophie! We love when our articles help connect linguistic facts to personal experiences. Now you can impress him with your new knowledge! Thanks for sharing!
I've been learning English for years, and these kinds of specific collocation articles are exactly what I need to move from 'good' to 'fluent'. Thank you!
Could you do a similar article for another versatile word like 'run' or 'set'? English phrasal verbs are my biggest challenge!
That's an excellent suggestion, Priya! You're right, 'run' and 'set' are incredibly versatile words with a multitude of collocations and phrasal verbs. We'll definitely consider your request for future articles. Thank you for the inspiration, and keep up your enthusiasm for learning these challenging but rewarding aspects of English!
I teach business English, and the section on recording information ('log data', 'log hours') is particularly useful. Many of my students struggle with formal business verbs.
That's fantastic to hear, Ramon! We agree that understanding the precise vocabulary for business contexts is vital. 'Log' is a very common and professional verb for recording information, so it's excellent for your students to master. We're happy to provide resources that support your valuable work!
The explanation of 'log in / log on' being related to networks sometimes is a good point. I always thought they were 100% interchangeable. Thanks for the nuance!
You're most welcome, Gaby! English can be tricky with such subtle nuances, and we're glad we could shed some light on it for you. Mastering these distinctions will definitely help you sound more like a native speaker. Keep practicing!
This article is very clear and concise. I appreciate the examples given for each collocation. It makes it easier to remember.
Are there any informal or slang uses of 'log' that I should be aware of, beyond these more formal ones?
That's a great question, Oliver! While the uses discussed in the article ('log in', 'log out', 'log data', 'slept like a log') are generally standard and widely understood, 'log' itself isn't commonly used in very informal or slang ways, apart from its standard meanings. The digital uses have become so ubiquitous that they are just part of everyday language. However, some might playfully refer to a heavy sleep as 'logging some Zs' or 'logging a lot of sleep,' which is a more casual extension of 'slept like a log.' Keep an ear out!
I'm always trying to sound more natural when I speak English. Understanding collocations like these is crucial. 'Slept like a log' is now firmly in my vocabulary!
What about 'log a complaint'? Is that related to 'log data'? I heard it once and wasn't sure if it meant the same kind of 'record'.
Excellent question, Chloe! Yes, 'log a complaint' is indeed related to 'log data' and 'log hours'. In this context, 'log' means to officially record or register something. So, when you 'log a complaint', you are formally documenting it so that it can be processed or addressed. It's a perfect example of 'log' as a verb meaning to record information!