pig vs Sus scrofa

pig and Sus scrofa both are nouns.

Word	Noun	Adjective	Verb	Adverb
pig	Yes	No	Yes	No
Sus scrofa	Yes	No	No	No

As nouns, pig and Sus scrofa are synonyms defined as:

Other synonyms of pig include grunter, hog, squealer.

pig (noun)	Sus scrofa (noun)
domestic swine	Old World wild swine having a narrow body and prominent tusks from which most domestic swine come; introduced in United States
a crude block of metal (lead or iron) poured from a smelting furnace	domestic swine
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