Mace vs CN gas

Mace and CN gas both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mace	Yes	No	No	No
CN gas	Yes	No	No	No

As nouns, CN gas is a hypernym of Mace; that is, CN gas is a word with a broader meaning than Mace:

Mace: (trademark) a liquid that temporarily disables a person; prepared as an aerosol and sprayed in the face, it irritates the eyes and causes dizziness and immobilization
CN gas: a tear gas that is weaker than CS gas but lasts longer

Other hypernyms of Mace include chloroacetophenone.

Mace (noun)	CN gas (noun)
(trademark) a liquid that temporarily disables a person; prepared as an aerosol and sprayed in the face, it irritates the eyes and causes dizziness and immobilization	a tear gas that is weaker than CS gas but lasts longer