wet vs relieve oneself

wet is a noun but relieve oneself is not a noun.

Word	Noun	Adjective	Verb	Adverb
wet	Yes	Yes	Yes	No
relieve oneself	No	No	Yes	No

As verbs, relieve oneself is a hypernym of wet; that is, relieve oneself is a word with a broader meaning than wet:

wet (noun)	relieve oneself (noun)
wetness caused by water

wet (adjective)	relieve oneself (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

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