The analogy provides a relationship between a function (something used for something) and the associated person to that tool, that is to say, the specialized person that uses the tool. Carpenters use saws for cutting wood or other hard materials, just like tailors use scissors to do part of their job: cutting fabric or any thin material.
The relationship in the analogy saw: carpenter:: scissors: tailor is a thing and its associated quality
Explanation:
An analogy is a literary device that compares two things that are completely different using something that is familiar, in this case, saw and scissors are completely different things but the analogy they use al connecting it with a person helps the reader understand that the two objects have a common quality, they both are tools.