What's the difference between dissever and unfellow?

Dissever

Definition:

• (v. t.) To part in two; to sever thoroughly; to sunder; to disunite; to separate; to disperse.
• (v. i.) To part; to separate.

Example Sentences:

Unfellow

Definition:

• (v. t.) To prevent from being a fellow or companion; to separate from one's fellows; to dissever.

Example Sentences: