amide vs ureide

amide and ureide both are nouns.

Word	Noun	Adjective	Verb	Adverb
amide	Yes	No	No	No
ureide	Yes	No	No	No

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

amide: any organic compound containing the group -CONH2
ureide: any compound, of general formula R-CO-NH-CO-NH2 or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea.

Other hyponyms of amide include acetamide, ethanamide, acrylamide, peptide, propanamide, proprionamide.

amide (noun)	ureide (noun)
any organic compound containing the group -CONH2	any compound, of general formula R-CO-NH-CO-NH2 or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea.