Native American and South American Indian

Native American noun - Any member of the peoples living in North or South America before the Europeans arrived.

South American Indian and Native American are semantically related. In some cases you can replace phrase "South American Indian" with "Native American", this phrases are similar.

South American Indian noun - A member of a native Indian group in South America.

Native American and South American Indian are semantically related. You can use "Native American" instead a noun phrase "South American Indian".