glyceryl vs chemical group

glyceryl and chemical group both are nouns.

Word	Noun	Adjective	Verb	Adverb
glyceryl	Yes	No	No	No
chemical group	Yes	No	No	No

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

glyceryl: a trivalent radical derived from glycerol by removing the three hydroxyl radicals
chemical group: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

Other hypernyms of glyceryl include group, radical.

glyceryl (noun)	chemical group (noun)
a trivalent radical derived from glycerol by removing the three hydroxyl radicals	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule