petrolatum vs Vaseline

petrolatum and Vaseline both are nouns.

Word	Noun	Adjective	Verb	Adverb
petrolatum	Yes	No	No	No
Vaseline	Yes	No	No	No

As nouns, Vaseline is a hyponym of petrolatum; that is, Vaseline is a word with a more specific, narrower meaning than petrolatum:

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

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