In the following, out of four words, three are alike and fourth is different. Find out the fourth one.

The logic followed here is:

Logic: Tools used for cutting.

• Saw, Knife, and Axe are all tools primarily designed for cutting, chopping, or piercing. They have blades or sharp edges.

• Screw-driver is a tool designed for turning screws (fastening or unfastening). It does not have a cutting or sharp edge for the primary function of cutting.

Hence, the correct answer is "Option 4".