cinch vs see to it

cinch is a noun but see to it is not a noun.

Word	Noun	Adjective	Verb	Adverb
cinch	Yes	No	Yes	No
see to it	No	No	Yes	No

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

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

cinch (noun)	see to it (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)	see to it (verb)
get a grip on; get mastery of	be careful or certain to do something; make certain of something
make sure of
tie a cinch around