wetting agent vs chemical agent

wetting agent and chemical agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
wetting agent	Yes	No	No	No
chemical agent	Yes	No	No	No

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

wetting agent: a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved
chemical agent: an agent that produces chemical reactions

wetting agent (noun)	chemical agent (noun)
a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved	an agent that produces chemical reactions