natatorium vs swimming bath

natatorium and swimming bath both are nouns.

Word	Noun	Adjective	Verb	Adverb
natatorium	Yes	No	No	No
swimming bath	Yes	No	No	No

As nouns, natatorium and swimming bath are synonyms defined as:

natatorium and swimming bath: pool that provides a facility for swimming

Other synonyms of natatorium include swimming pool.

natatorium (noun)	swimming bath (noun)
pool that provides a facility for swimming	pool that provides a facility for swimming