There are two types of the blade edge, i.e., serrated or fine.
Serrated: It can be used for cutting through cartilage and bone of an animal.
It is Used for sawing through wood.
Cutting through certain materials (i.e., rope)
Fine: It can be used for skinning animals.
It is Used for cutting through animal flesh.
Chopping wood and Cutting through certain materials(i.e., Fishing reel)