Word Distinction: Degrees of Humidity

The words damp, humid and moist all denote degrees of humidity. Damp is often used in a bad sense:
I can’t wear these socks; they are damp.
Moist is used especially of food and parts of the body, and often has a good sense (= not too dry):
a rich, moist cake
moist eyes/lips
Humid is a more scientific word usually used of climate or weather:
It was hot and humid in the jungle.