natatorium vs swimming pool

natatorium and swimming pool both are nouns.

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

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

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

Other synonyms of natatorium include swimming bath.

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