We add<o>top of the word to be polite(in this case,the meaning does not change), to add meaning<yours>,to become another word.
1)Politeness marker:ocha,omizu,ohashi,oshooyu,,,,oyasumi,ohisashiburi
2)onamae wa? okuni wa? otoshi wa?
3)te=hand ote=shake a paw
nigiri=one type of sushi onigiri=rice ball
naka=insade,in onaka=stmacq,barry