baptistery vs baptistry

baptistery and baptistry both are nouns.

Word	Noun	Adjective	Verb	Adverb
baptistery	Yes	No	No	No
baptistry	Yes	No	No	No

As nouns, baptistery and baptistry are synonyms defined as:

Other synonyms of baptistery include baptismal font, font.

baptistery (noun)	baptistry (noun)
bowl for baptismal water	bowl for baptismal water