Hebrew vs rabbi

Hebrew and rabbi both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hebrew	Yes	Yes	No	No
rabbi	Yes	No	No	No

Hebrew (noun)	rabbi (noun)
the ancient Canaanitic language of the Hebrews that has been revived as the official language of Israel	spiritual leader of a Jewish congregation; qualified to expound and apply Jewish law
a person belonging to the worldwide group claiming descent from Jacob (or converted to it) and connected by cultural or religious ties

Hebrew (adjective)	rabbi (adjective)
of or relating to the language of the Hebrews
of or relating to or characteristic of the Hebrews