Sunday punch vs clout

Sunday punch and clout both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sunday punch	Yes	No	No	No
clout	Yes	No	Yes	No

As nouns, clout is a hypernym of Sunday punch; that is, clout is a word with a broader meaning than Sunday punch:

Sunday punch: a hard punch that renders the opponent unable to continue boxing
clout: (boxing) a blow with the fist

Other hypernyms of Sunday punch include biff, lick, poke, punch, slug.

Sunday punch (noun)	clout (noun)
a hard punch that renders the opponent unable to continue boxing	(boxing) a blow with the fist
	a short nail with a flat head; used to attach sheet metal to wood
	special advantage or influence
	a target used in archery

Sunday punch (verb)	clout (verb)
	strike hard, especially with the fist