cinch vs assure

cinch is a noun but assure is not a noun.

Word	Noun	Adjective	Verb	Adverb
cinch	Yes	No	Yes	No
assure	No	No	Yes	No

As verbs, assure is a hypernym of cinch; that is, assure is a word with a broader meaning than cinch:

Other hypernyms of cinch include ascertain, check, control, ensure, insure, see, see to it.

cinch (noun)	assure (noun)
a form of all fours in which the players bid for the privilege of naming trumps
any undertaking that is easy to do
stable gear consisting of a band around a horse's belly that holds the saddle in place

cinch (verb)	assure (verb)
get a grip on; get mastery of	be careful or certain to do something; make certain of something
make sure of	inform positively and with certainty and confidence
tie a cinch around	assure somebody of the truth of something with the intention of giving the listener confidence
	make a promise or commitment
	make certain of