cyano group vs chemical group

cyano group and chemical group both are nouns.

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

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

cyano group: the monovalent group -CN in a chemical compound
chemical group: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

Other hypernyms of cyano group include group, radical.

cyano group (noun)	chemical group (noun)
the monovalent group -CN in a chemical compound	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule