Know Your Rights: A Guide To OSHA Recordkeeping For Employees

Recently one of my friends told me that there is distinct difference between 'know of something' and 'know about something' expressions.

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'know of' is used when you have personal experience with wha

I'm confused in whether to write know or knows in the following statement:- the ones who are included know better. ?

Also explain the difference between the two, thanks.

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For me, know implies knowledge of details or individual pieces, while am aware of implies a knowledge only of a whole.

Using your example, knowing my rights means that i know i have the right to remain.

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I know (about) this difficulty/problem.

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I know (about) engineering.

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In the first sentence, it seems to me that to know expresses that the speaker experienced the problem/difficulty before.