Arab chief vs tribal sheikh

Arab chief and tribal sheikh both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arab chief	Yes	No	No	No
tribal sheikh	Yes	No	No	No

As nouns, Arab chief and tribal sheikh are synonyms defined as:

Other synonyms of Arab chief include sheik, sheikh, tribal sheik.

Arab chief (noun)	tribal sheikh (noun)
the leader of an Arab village or family	the leader of an Arab village or family