Vaseline vs petroleum jelly

Vaseline and petroleum jelly both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vaseline	Yes	No	No	No
petroleum jelly	Yes	No	No	No

As nouns, petroleum jelly is a hypernym of Vaseline; that is, petroleum jelly is a word with a broader meaning than Vaseline:

Vaseline: a trademarked brand of petroleum jelly
petroleum jelly: a semisolid mixture of hydrocarbons obtained from petroleum; used in medicinal ointments and for lubrication

Other hypernyms of Vaseline include mineral jelly, petrolatum.

Vaseline (noun)	petroleum jelly (noun)
a trademarked brand of petroleum jelly	a semisolid mixture of hydrocarbons obtained from petroleum; used in medicinal ointments and for lubrication