pig vs slut

pig and slut both are nouns.

Word	Noun	Adjective	Verb	Adverb
pig	Yes	No	Yes	No
slut	Yes	No	No	No

As nouns, slut is a hyponym of pig; that is, slut is a word with a more specific, narrower meaning than pig:

Other hyponyms of pig include litter lout, litterbug, litterer, slattern, slovenly woman, trollop.

pig (noun)	slut (noun)
domestic swine	a woman adulterer
a crude block of metal (lead or iron) poured from a smelting furnace	a dirty untidy woman
mold consisting of a bed of sand in which pig iron is cast	A sexually loose woman
a person regarded as greedy and pig-like
uncomplimentary terms for a policeman
a coarse obnoxious person