wetter vs emulsifier

wetter and emulsifier both are nouns.

Word	Noun	Adjective	Verb	Adverb
wetter	Yes	No	No	No
emulsifier	Yes	No	No	No

As nouns, emulsifier is a hyponym of wetter; that is, emulsifier is a word with a more specific, narrower meaning than wetter:

wetter: a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved
emulsifier: a surface-active agent that promotes the formation of an emulsion

Other hyponyms of wetter include detergent.

wetter (noun)	emulsifier (noun)
a workman who wets the work in a manufacturing process	a surface-active agent that promotes the formation of an emulsion
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