pig vs litter lout

pig and litter lout both are nouns.

Word	Noun	Adjective	Verb	Adverb
pig	Yes	No	Yes	No
litter lout	Yes	No	No	No

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

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

pig (noun)	litter lout (noun)
domestic swine	a person who litters public places with refuse
a crude block of metal (lead or iron) poured from a smelting furnace
mold consisting of a bed of sand in which pig iron is cast
a person regarded as greedy and pig-like
uncomplimentary terms for a policeman
a coarse obnoxious person