Pleasantness.
A thing or circumstance that is welcome and makes life a little easier or more pleasant.
Convenience.
a unit pertaining to the infrastructure of a community, such as a public toilet, a postbox, a library, etc.
Any consumer electronics product.
Any device or machine, especially one whose name cannot be recalled. Often either clever or complicated.
A sequence of machine code instructions crafted as part of an exploit that attempts to divert execution to a memory location chosen by the attacker.
A technique for converting a part of one problem to an equivalent part of another problem. Used in constructing reductions.