If you look at the Ko Te Marae Reo Maori - The Maori Language Marae thread which has been stickied and is at the top of the page you'll find some basic grammar information on the language.
Na te kaiwhakahaere o tenei tutanga o te papa panui nei.
Linguicide IS genocide.
He ingoa ōpaki a Riki; he ingoa ōkawa a Ariki.
Riki is an informal name; Ariki is a formal name.