Twelve Tribes of Israel vs clan

Twelve Tribes of Israel and clan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Twelve Tribes of Israel	Yes	No	No	No
clan	Yes	No	No	No

As nouns, clan is a hypernym of Twelve Tribes of Israel; that is, clan is a word with a broader meaning than Twelve Tribes of Israel:

Twelve Tribes of Israel: twelve kin groups of ancient Israel each traditionally descended from one of the twelve sons of Jacob
clan: group of people related by blood or marriage

Other hypernyms of Twelve Tribes of Israel include kin, kin group, kindred, kinship group, tribe.

Twelve Tribes of Israel (noun)	clan (noun)
twelve kin groups of ancient Israel each traditionally descended from one of the twelve sons of Jacob	group of people related by blood or marriage