washup vs steam bath

washup and steam bath both are nouns.

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

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

washup: the act of washing yourself (or another person)
steam 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, Turkish bath, vapor bath, vapour bath.

washup (noun)	steam 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