bed wetter vs bedwetter

bed wetter and bedwetter both are nouns.

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

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

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

Other synonyms of bed wetter include wetter.

bed wetter (noun)	bedwetter (noun)
someone suffering from enuresis; someone who urinates while asleep in bed	someone suffering from enuresis; someone who urinates while asleep in bed