wash up vs washup

wash up is not a noun while washup is a noun.

Word	Noun	Adjective	Verb	Adverb
wash up	No	No	Yes	No
washup	Yes	No	No	No

wash up (noun)	washup (noun)
	the act of washing yourself (or another person)
	the act of washing dishes

wash up (verb)	washup (verb)
wash one's face and hands
wear out completely
be carried somewhere by water or as if by water
wash dishes
carry somewhere (of water or current or waves)