porc vs salt pork

porc and salt pork both are nouns.

Word	Noun	Adjective	Verb	Adverb
porc	Yes	No	No	No
salt pork	Yes	No	No	No

As nouns, salt pork is a hyponym of porc; that is, salt pork is a word with a more specific, narrower meaning than porc:

porc: meat from a domestic hog or pig
salt pork: fat from the back and sides and belly of a hog carcass cured with salt

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

porc (noun)	salt pork (noun)
meat from a domestic hog or pig	fat from the back and sides and belly of a hog carcass cured with salt