sagamore vs Indian chief

sagamore and Indian chief both are nouns.

Word	Noun	Adjective	Verb	Adverb
sagamore	Yes	No	No	No
Indian chief	Yes	No	No	No

As nouns, Indian chief is a hypernym of sagamore; that is, Indian chief is a word with a broader meaning than sagamore:

sagamore: a chief of a North American tribe or confederation (especially an Algonquian chief)
Indian chief: the leader of a group of Native Americans

Other hypernyms of sagamore include Indian chieftain.

sagamore (noun)	Indian chief (noun)
a chief of a North American tribe or confederation (especially an Algonquian chief)	the leader of a group of Native Americans