hog vs pig

hog and pig both are nouns.

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

As nouns, hog and pig are synonyms defined as:

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

As nouns, hog and pig are synonyms defined as:

hog (noun)	pig (noun)
domestic swine	domestic swine
a sheep up to the age of one year; one yet to be sheared	a crude block of metal (lead or iron) poured from a smelting furnace
a person regarded as greedy and pig-like	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

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