pushover vs cinch

pushover and cinch both are nouns.

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

As nouns, pushover and cinch are synonyms defined as:

Other synonyms of pushover include breeze, child's play, duck soup, picnic, piece of cake, snap, walkover.

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