overdrive vs overwork

overdrive and overwork both are nouns.

Word	Noun	Adjective	Verb	Adverb
overdrive	Yes	No	Yes	No
overwork	Yes	No	Yes	No

As verbs, overwork is a hypernym of overdrive; that is, overwork is a word with a broader meaning than overdrive:

Other hypernyms of overdrive include exploit.

overdrive (noun)	overwork (noun)
a high gear used at high speeds to maintain the driving speed with less output power	the act of working too much or too long
the state of high or excessive activity or productivity or concentration

overdrive (verb)	overwork (verb)
make use of too often or too extensively	use too much
drive or work too hard	work excessively hard