javelina vs peccary

javelina and peccary both are nouns.

Word	Noun	Adjective	Verb	Adverb
javelina	Yes	No	No	No
peccary	Yes	No	No	No

As nouns, peccary is a hypernym of javelina; that is, peccary is a word with a broader meaning than javelina:

javelina: dark grey peccary with an indistinct white collar; of semi desert areas of Mexico and southwestern United States
peccary: nocturnal gregarious pig-like wild animals of North America and South America

Other hypernyms of javelina include musk hog.

javelina (noun)	peccary (noun)
dark grey peccary with an indistinct white collar; of semi desert areas of Mexico and southwestern United States	nocturnal gregarious pig-like wild animals of North America and South America