Algonkin and Algonquian

Algonkin noun - A member of a North American Indian people in the Ottawa river valley of Ontario and Quebec.

Algonquian and Algonkin are semantically related. In some cases you can use "Algonquian" instead a noun "Algonkin".

Algonquian noun - A member of any of the North American Indian groups speaking an Algonquian language and originally living in the subarctic regions of eastern Canada; many Algonquian tribes migrated south into the woodlands from the Mississippi River to the Atlantic coast.

Algonkin and Algonquian are semantically related. Sometimes you can replace term "Algonkin" with "Algonquian", this nouns are similar.