decaffeinate vs remove

decaffeinate is not a noun while remove is a noun.

Word	Noun	Adjective	Verb	Adverb
decaffeinate	No	No	Yes	No
remove	Yes	No	Yes	No

As verbs, remove is a hypernym of decaffeinate; that is, remove is a word with a broader meaning than decaffeinate:

Other hypernyms of decaffeinate include get rid of.

decaffeinate (noun)	remove (noun)
	degree of figurative distance or separation

decaffeinate (verb)	remove (verb)
remove caffeine from (coffee)	remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
	stay away or leave
	get rid of something abstract
	shift the position or location of, as for business, legal, educational, or military purposes
	dispose of
	remove from a position or an office
	kill intentionally and with premeditation
	cause to leave