oink vs grunt

oink and grunt both are nouns.

Word	Noun	Adjective	Verb	Adverb
oink	Yes	No	Yes	No
grunt	Yes	No	Yes	No

As nouns, oink and grunt are synonyms defined as:

oink (noun)	grunt (noun)
the short low gruff noise of the kind made by hogs	medium-sized tropical marine food fishes that utter grunting sounds when caught
	the short low gruff noise of the kind made by hogs
	an unskilled or low-ranking soldier or other worker

oink (verb)	grunt (verb)
utter a high-pitched cry, characteristic of pigs	issue a grunting, low, animal-like noise