Coosan languages
Melville Jacobs (1939) says that the languages are as close as Dutch and German.The origin of the name Coos is uncertain: one idea is that it is derived from a Hanis stem gus- meaning 'south' as in gusimídži·č 'southward'; another idea is that it is derived from a southwestern Oregon Athabaskan word ku·s meaning 'bay'.[1] Melville Jacobs also said that they were two dialects of the same languages; though he did note that Mrs. Annie Miner Peterson said they were in fact distinct languages and that Miluk had two dialects.[2] In 1916 Edward Sapir suggested that the Coosan languages are part of a larger Oregon Penutian genetic grouping.[3] However, more recent work has placed Hanis and Miluk as both separate languages and part of their own language family,[4] with Douglas-Tavani doing a comparative reconstruction of Proto-Coosan's phonemes and vocabulary [5] [6][7]