wetter vs chemical agent

wetter and chemical agent both are nouns.

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

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

wetter: 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

wetter (noun)	chemical agent (noun)
a workman who wets the work in a manufacturing process	an agent that produces chemical reactions
someone suffering from enuresis; someone who urinates while asleep in bed
a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved