enuresis vs bed-wetting

enuresis and bed-wetting both are nouns.

Word	Noun	Adjective	Verb	Adverb
enuresis	Yes	No	No	No
bed-wetting	Yes	No	No	No

As nouns, bed-wetting is a hyponym of enuresis; that is, bed-wetting is a word with a more specific, narrower meaning than enuresis:

enuresis: inability to control the flow of urine and involuntary urination
bed-wetting: enuresis during sleep; especially common in children (who usually outgrow it)

Other hyponyms of enuresis include overflow incontinence, stress incontinence, urge incontinence.

enuresis (noun)	bed-wetting (noun)
inability to control the flow of urine and involuntary urination	enuresis during sleep; especially common in children (who usually outgrow it)