baby oil vs salve

baby oil and salve both are nouns.

Word	Noun	Adjective	Verb	Adverb
baby oil	Yes	No	No	No
salve	Yes	No	Yes	No

As nouns, salve is a hypernym of baby oil; that is, salve is a word with a broader meaning than baby oil:

baby oil: an ointment for babies
salve: semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation

Other hypernyms of baby oil include balm, ointment, unction, unguent.

baby oil (noun)	salve (noun)
an ointment for babies	anything that remedies or heals or soothes
	semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation

baby oil (verb)	salve (verb)
	apply a salve to, usually for the purpose of healing
	save from ruin, destruction, or harm