glyceryl ester vs ester

glyceryl ester and ester both are nouns.

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

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

glyceryl ester: an ester of glycerol
ester: organic compound formed by reaction between an acid and an alcohol with elimination of water

glyceryl ester (noun)	ester (noun)
an ester of glycerol	organic compound formed by reaction between an acid and an alcohol with elimination of water