porc vs pigs' feet

porc and pigs' feet both are nouns.

Word	Noun	Adjective	Verb	Adverb
porc	Yes	No	No	No
pigs' feet	Yes	No	No	No

As nouns, pigs' feet is a hyponym of porc; that is, pigs' feet is a word with a more specific, narrower meaning than porc:

porc: meat from a domestic hog or pig
pigs' feet: feet or knuckles of hogs used as food; pickled or stewed or jellied

Other hyponyms of porc include cochon de lait, suckling pig, salt pork, pigs' knuckles.

porc (noun)	pigs' feet (noun)
meat from a domestic hog or pig	feet or knuckles of hogs used as food; pickled or stewed or jellied