tannin vs kutch

tannin and kutch both are nouns.

Word	Noun	Adjective	Verb	Adverb
tannin	Yes	No	No	No
kutch	Yes	No	No	No

As nouns, kutch is a hyponym of tannin; that is, kutch is a word with a more specific, narrower meaning than tannin:

tannin: any of various complex phenolic substances of plant origin; used in tanning and in medicine
kutch: tannin extract derived from any of several mangrove barks of Pacific areas

Other hyponyms of tannin include cutch, catechin.

tannin (noun)	kutch (noun)
any of various complex phenolic substances of plant origin; used in tanning and in medicine	tannin extract derived from any of several mangrove barks of Pacific areas