chili vinegar vs acetum

chili vinegar and acetum both are nouns.

Word	Noun	Adjective	Verb	Adverb
chili vinegar	Yes	No	No	No
acetum	Yes	No	No	No

As nouns, acetum is a hypernym of chili vinegar; that is, acetum is a word with a broader meaning than chili vinegar:

chili vinegar: fiery vinegar flavored with chili peppers
acetum: sour-tasting liquid produced usually by oxidation of the alcohol in wine or cider and used as a condiment or food preservative

Other hypernyms of chili vinegar include vinegar.

chili vinegar (noun)	acetum (noun)
fiery vinegar flavored with chili peppers	sour-tasting liquid produced usually by oxidation of the alcohol in wine or cider and used as a condiment or food preservative
	a dilute solution of acetic acid that is used as a solvent (e.g. for a drug)