bath mitzvah vs bas mitzvah

bath mitzvah and bas mitzvah both are nouns.

Word	Noun	Adjective	Verb	Adverb
bath mitzvah	Yes	No	No	No
bas mitzvah	Yes	No	No	No

As nouns, bath mitzvah and bas mitzvah are synonyms defined as:

bath mitzvah and bas mitzvah: (Judaism) an initiation ceremony marking the 12th birthday of a Jewish girl and signifying the beginning of religious responsibility

Other synonyms of bath mitzvah include bat mitzvah.

bath mitzvah (noun)	bas mitzvah (noun)
(Judaism) an initiation ceremony marking the 12th birthday of a Jewish girl and signifying the beginning of religious responsibility	(Judaism) an initiation ceremony marking the 12th birthday of a Jewish girl and signifying the beginning of religious responsibility