heating vs overheating

heating and overheating both are nouns.

Word	Noun	Adjective	Verb	Adverb
heating	Yes	No	No	No
overheating	Yes	No	No	No

As nouns, overheating is a hyponym of heating; that is, overheating is a word with a more specific, narrower meaning than heating:

Other hyponyms of heating include boiling, global warming, induction heating, radiant heating, melt, melting, thaw, thawing.

heating (noun)	overheating (noun)
utility to warm a building	excessive heating
the process of becoming warmer; a rising temperature