bed wetter vs wetter

bed wetter and wetter both are nouns.

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

As nouns, bed wetter and wetter are synonyms defined as:

bed wetter and wetter: someone suffering from enuresis; someone who urinates while asleep in bed

Other synonyms of bed wetter include bedwetter.

bed wetter (noun)	wetter (noun)
someone suffering from enuresis; someone who urinates while asleep in bed	a workman who wets the work in a manufacturing process
	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