...and Tahitian all have mata, and Hawaiian has maka, a result of a regular sound change: t -> k. But Quechua has ñawi, Nahuatl ixtli, Proto-Semitic *\ayn-, Old-Kingdom Egyptian *jîrat, and Proto-Indo-European *okw- (> English eye, German Auge, Latin oculus, Polish oko, ...)
This is only one...