wash up vs refresh

wash up and refresh both are verbs.

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

As verbs, refresh is a hypernym of wash up; that is, refresh is a word with a broader meaning than wash up:

Other hypernyms of wash up include freshen, freshen up, refreshen.

wash up (verb)	refresh (verb)
wash one's face and hands	make fresh again
wear out completely	become or make oneself fresh again
be carried somewhere by water or as if by water	make (to feel) fresh
wash dishes	refresh one's memory
carry somewhere (of water or current or waves)