showroom vs saleroom

showroom and saleroom both are nouns.

Word	Noun	Adjective	Verb	Adverb
showroom	Yes	No	No	No
saleroom	Yes	No	No	No

As nouns, showroom and saleroom are synonyms defined as:

showroom and saleroom: an area where merchandise (such as cars) can be displayed

Other synonyms of showroom include salesroom.

showroom (noun)	saleroom (noun)
an area where merchandise (such as cars) can be displayed	an area where merchandise (such as cars) can be displayed