decoct vs decrease

decoct is not a noun while decrease is a noun.

Word	Noun	Adjective	Verb	Adverb
decoct	No	No	Yes	No
decrease	Yes	No	Yes	No

As verbs, decrease is a hypernym of decoct; that is, decrease is a word with a broader meaning than decoct:

Other hypernyms of decoct include diminish, fall, lessen.

decoct (noun)	decrease (noun)
	the act of decreasing or reducing something
	the amount by which something decreases
	a change downward
	a process of becoming smaller or shorter

decoct (verb)	decrease (verb)
extract the essence of something by boiling it	decrease in size, extent, or range
steep in hot water	make become smaller
be cooked until very little liquid is left