challah vs hallah

challah and hallah both are nouns.

Word	Noun	Adjective	Verb	Adverb
challah	Yes	No	No	No
hallah	Yes	No	No	No

As nouns, challah and hallah are synonyms defined as:

challah and hallah: (Judaism) a loaf of white bread containing eggs and leavened with yeast; often formed into braided loaves and glazed with eggs before baking

challah (noun)	hallah (noun)
(Judaism) a loaf of white bread containing eggs and leavened with yeast; often formed into braided loaves and glazed with eggs before baking	(Judaism) a loaf of white bread containing eggs and leavened with yeast; often formed into braided loaves and glazed with eggs before baking