* Bow (as in a weapon): This homonym is spelled the same but pronounced differently (with a long "o" sound). Its meaning is the front part of a ship.
* Bow (as in to bend): This homonym is spelled the same but pronounced differently (with a short "o" sound). Its meaning is to bend the head or body in greeting or respect.
* Bough: This word is pronounced the same as "bow" (as in a weapon) and refers to a branch of a tree.
To know which homonym is correct, you need to consider the sentence's context and understand the intended meaning.