Easement

That which gives ease, relief, or assistance; convenience; accommodation.

A liberty, privilege, or advantage, which one proprietor has in the estate of another proprietor, distinct from the ownership of the soil, as a way, water course, etc. It is a species of what the civil law calls servitude.

A curved member instead of an abrupt change of direction, as in a baseboard, hand rail, etc.

(law) the privilege of using something that is not your own (as using another's land as a right of way to your own land)

the act of reducing something unpleasant (as pain or annoyance); "he asked the nurse for relief from the constant pain"