Find out the related word to complete the analogy.
$$\text{Surgeon : Scalpel :: Carpenter : ?}$$

The relationship in the given pair is based on a profession and its primary working tool:
* A Surgeon primarily uses a Scalpel to perform surgeries.

Following the same analogy:

* A Carpenter primarily uses a Saw to cut wood and perform carpentry work.

Hence, 'Saw' is the correct related word.