What's the difference between deemster and sheading?

Deemster

Definition:

• (n.) A judge in the Isle of Man who decides controversies without process.

Example Sentences:

Sheading

Definition:

• (v. t.) A tithing, or division, in the Isle of Man, in which there is a coroner, or chief constable. The island is divided into six sheadings.

Example Sentences:

• (1) Thames Valley Police assistant chief constable Chris Shead defended the force's use of the weapon.