Custom vs I have this habit of doodling

When to use each in English, with meaning, register, and examples.

Custom

Top 1,000 (very common)B1noun

I have this habit of doodling

InformalTop 2,000 (common)
Most formal: CustomMost common: Custom
 CustomI have this habit of doodling
Pronunciation🇬🇧 /["/ˈkʌstəm/"]/🇺🇸 /["/ˈkʌstəm/"]/🇬🇧 //aɪ hæv ðɪs ˈhæbɪt əv ˈduːdlɪŋ//🇺🇸 //aɪ hæv ðɪs ˈhæbɪt əv ˈduːdəlɪŋ//
MeaningA special way of doing something that is chosen by a person or group.I often draw simple pictures without thinking.
ExampleThe company has a custom of giving bonuses at the end of the year.Whenever I'm bored, I have this habit of doodling.
RegisterNeutralInformal
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB1-
Part of speechnoun
Collocationsaccepted, age-old, ancient, follow, observe, practise/​practice, die out, disappear, prevail, according to a/​the custom, in accordance with (a/​the) custom, through custom, as is/​was the customdevelop a habit, common habit, strange habit
Antonymsstandard, normdisuse, inactivity, neglect
Common mistakesConfused with 'costume' due to similar spelling., Misused as a verb instead of a noun in sentences., Omitted the plural when talking about multiple customs.'Have' instead of 'has' for third person singular., Confusing 'habit' with 'habits' when indicating multiple., Using 'of doodles' instead of 'of doodling'.
Usage notesUsed when referring to practices that are specific to a person, culture, or organization. Not usually used in formal writing without context.Use this phrase in casual conversations. Not suitable for formal writing. Can express a personal trait.

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I have this habit of doodling

Frequently asked questions: Custom vs I have this habit of doodling

What's the difference between Custom and I have this habit of doodling?

Custom: A special way of doing something that is chosen by a person or group. I have this habit of doodling: I often draw simple pictures without thinking.

Which is more formal: Custom and I have this habit of doodling?

Custom is the most formal of these.

Which is more common: Custom and I have this habit of doodling?

Custom is the most common in everyday English.

Can you show an example of each?

Custom: The company has a custom of giving bonuses at the end of the year. I have this habit of doodling: Whenever I'm bored, I have this habit of doodling.

Can I use Custom and I have this habit of doodling interchangeably?

Not always. Custom and I have this habit of doodling are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.