stearate vs ester

stearate and ester both are nouns.

Word	Noun	Adjective	Verb	Adverb
stearate	Yes	No	No	No
ester	Yes	No	No	No

As nouns, ester is a hypernym of stearate; that is, ester is a word with a broader meaning than stearate:

stearate: an ester of stearic acid.
ester: organic compound formed by reaction between an acid and an alcohol with elimination of water

stearate (noun)	ester (noun)
an ester of stearic acid.	organic compound formed by reaction between an acid and an alcohol with elimination of water
a salt of stearic acid.