washup vs vapor bath

washup and vapor bath both are nouns.

Word	Noun	Adjective	Verb	Adverb
washup	Yes	No	No	No
vapor bath	Yes	No	No	No

As nouns, vapor bath is a hyponym of washup; that is, vapor bath is a word with a more specific, narrower meaning than washup:

washup: the act of washing yourself (or another person)
vapor bath: you sweat in a steam room before getting a rubdown and cold shower

Other hyponyms of washup include shower, shower bath, bath, sponge bath, steam bath, Turkish bath, vapour bath.

washup (noun)	vapor bath (noun)
the act of washing yourself (or another person)	you sweat in a steam room before getting a rubdown and cold shower
the act of washing dishes	a room that can be filled with steam in which people bathe; `vapour bath' is a British term