sheik vs sheikh

sheik and sheikh both are nouns.

Word	Noun	Adjective	Verb	Adverb
sheik	Yes	No	No	No
sheikh	Yes	No	No	No

As nouns, sheik and sheikh are synonyms defined as:

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

sheik (noun)	sheikh (noun)
the leader of an Arab village or family	the leader of an Arab village or family
a man who is much concerned with his dress and appearance