abstain vs teetotal

abstain is not an adjective while teetotal is an adjective.

Word	Noun	Adjective	Verb	Adverb
abstain	No	No	Yes	No
teetotal	No	Yes	Yes	No

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

abstain: choose not to consume
teetotal: practice teetotalism and abstain from the consumption of alcoholic beverages

Other hyponyms of abstain include fast, fast, avoid, keep off.

abstain (adjective)	teetotal (adjective)
	practicing complete abstinence from alcoholic beverages

abstain (verb)	teetotal (verb)
choose not to consume	practice teetotalism and abstain from the consumption of alcoholic beverages
refrain from voting