pig vs hog

pig and hog both are nouns.

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

As nouns, pig and hog are synonyms defined as:

Other synonyms of pig include grunter, squealer, Sus scrofa.

As nouns, pig and hog are synonyms defined as:

pig (noun)	hog (noun)
domestic swine	domestic swine
a crude block of metal (lead or iron) poured from a smelting furnace	a sheep up to the age of one year; one yet to be sheared
mold consisting of a bed of sand in which pig iron is cast	a person regarded as greedy and pig-like
a person regarded as greedy and pig-like
uncomplimentary terms for a policeman
a coarse obnoxious person

pig (verb)	hog (verb)
give birth to (piglets)	take greedily; take more than one's share
eat greedily
live like a pig, in squalor