pee-pee vs wet

pee-pee is not a noun while wet is a noun.

Word	Noun	Adjective	Verb	Adverb
pee-pee	No	No	Yes	No
wet	Yes	Yes	Yes	No

As verbs, wet is a hyponym of pee-pee; that is, wet is a word with a more specific, narrower meaning than pee-pee:

Other hyponyms of pee-pee include stale.

pee-pee (noun)	wet (noun)
	wetness caused by water

pee-pee (adjective)	wet (adjective)
	covered or soaked with a liquid such as water
	producing or secreting milk
	supporting or permitting the legal production and sale of alcoholic beverages
	containing moisture or volatile components
	consisting of or trading in alcoholic liquor
	very drunk

pee-pee (verb)	wet (verb)
eliminate urine	make one's bed or clothes wet by urinating
	cause to become wet