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Kama'ainasimply refers to someone whom has live in Hawaii for a long time and made it their home. Kanaka Maoli however refers to the people indigenous to the Hawaiian islands and their descendants...
The Hawaiian word for sweet is mona [mo-nah] if you mean like candy, and onaona or ʻaʻala [ah 'ah-la] if you mean like the smell of a flower of perfume.
'O can loosely be translated as is. 'O wai kou inoa? Literally= Is who your name?= What is your name? 'O ia no ke keiki ana=Is s/he indeed the child of her/him=S/He really is his/her child.Another...