Redskin vs Amerindian

Redskin and Amerindian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Redskin	Yes	No	No	No
Amerindian	Yes	No	No	No

As nouns, Amerindian is a hypernym of Redskin; that is, Amerindian is a word with a broader meaning than Redskin:

Redskin: (slang) offensive term for Native Americans
Amerindian: any member of the peoples living in North or South America before the Europeans arrived

Other hypernyms of Redskin include Native American.

Redskin (noun)	Amerindian (noun)
(slang) offensive term for Native Americans	any member of the peoples living in North or South America before the Europeans arrived