tiredness vs weariness

tiredness and weariness both are nouns.

Word	Noun	Adjective	Verb	Adverb
tiredness	Yes	No	No	No
weariness	Yes	No	No	No

As nouns, tiredness and weariness are synonyms defined as:

tiredness and weariness: temporary loss of strength and energy resulting from hard physical or mental work

Other synonyms of tiredness include fatigue.

tiredness (noun)	weariness (noun)
temporary loss of strength and energy resulting from hard physical or mental work	temporary loss of strength and energy resulting from hard physical or mental work