sagamore vs sachem

sagamore and sachem both are nouns.

Word	Noun	Adjective	Verb	Adverb
sagamore	Yes	No	No	No
sachem	Yes	No	No	No

As nouns, sagamore and sachem are synonyms defined as:

sagamore and sachem: a chief of a North American tribe or confederation (especially an Algonquian chief)

sagamore (noun)	sachem (noun)
a chief of a North American tribe or confederation (especially an Algonquian chief)	a chief of a North American tribe or confederation (especially an Algonquian chief)
	a political leader (especially of Tammany Hall)