Find the odd number / letters / word from the given alternative:

The odd word from the given alternatives is C. Stem.

• Deck is the main horizontal surface of a ship or boat, on which the crew live and work.
• Quay is a structure alongside a body of water, where ships can load and unload cargo.
• Bow is the front part of a ship or boat.

The stem is the vertical structure at the front of a ship or boat, which supports the masts and rigging. It is not a common word in everyday language, and is not as well-known as the other three words.