abstain vs keep off

abstain and keep off both are verbs.

Word	Noun	Adjective	Verb	Adverb
abstain	No	No	Yes	No
keep off	No	No	Yes	No

As verbs, keep off is a hyponym of abstain; that is, keep off is a word with a more specific, narrower meaning than abstain:

Other hyponyms of abstain include fast, fast, avoid, teetotal.

abstain (verb)	keep off (verb)
choose not to consume	refrain from entering or walking onto
refrain from voting	refrain from certain foods or beverages