Hardware:
The physical elements and interfaces that constitute a component or system.

High temperature storage:
A high temperature (150°C typically) bake performed for an extended period (usually 1000 hours) without electrical power applied.

Hole:
The absence of a valence electron in a semiconductor crystal. The movement of a hole is equivalent to the movement of a positive charge.

HTOL
The High Temperature Operating Life (HTOL) or steady-state life test is performed to determine the reliability of devices under operation at high temperature conditions over an extended period of time.