diazonium vs cation

diazonium and cation both are nouns.

Word	Noun	Adjective	Verb	Adverb
diazonium	Yes	No	No	No
cation	Yes	No	No	No

As nouns, cation is a hypernym of diazonium; that is, cation is a word with a broader meaning than diazonium:

diazonium: the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes
cation: a positively charged ion

diazonium (noun)	cation (noun)
the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes	a positively charged ion