The noun 'high' is a singular, common noun; a Word for a thing.
- The noun 'high' is an abstract noun as a Word for a period or situation in which something reaches its peak; a feeling of great happiness or excitement; a state of intoxication produced by or as if by a drug.
- The noun 'high' is a concrete noun as a Word for a temperature setting for a heating device or a motor; a Word for a place above (on high); a region of high barometric pressure.
The noun form of the adjective 'high' is highness.
The adjective also has the related noun "height" (how high something is).
