overfatigue vs weary

overfatigue is not an adjective while weary is an adjective.

Word	Noun	Adjective	Verb	Adverb
overfatigue	No	No	Yes	No
weary	No	Yes	Yes	No

As verbs, weary is a hypernym of overfatigue; that is, weary is a word with a broader meaning than overfatigue:

Other hypernyms of overfatigue include fag, fag out, fatigue, jade, outwear, tire, tire out, wear, wear down, wear out, wear upon.

overfatigue (adjective)	weary (adjective)
	physically and mentally fatigued

overfatigue (verb)	weary (verb)
tire excessively	exhaust or get tired through overuse or great strain or stress
	lose interest or become bored with something or somebody