leave off vs omit

leave off and omit both are verbs.

Word	Noun	Adjective	Verb	Adverb
leave off	No	No	Yes	No
omit	No	No	Yes	No

As verbs, leave off and omit are synonyms defined as:

leave off and omit: prevent from being included or considered or accepted

Other synonyms of leave off include except, exclude, leave out, take out.

leave off (verb)	omit (verb)
cease to use	leave undone or leave out
prevent from being included or considered or accepted	prevent from being included or considered or accepted
come to an end, stop or cease