weariness vs tiredness

weariness and tiredness both are nouns.

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

As nouns, weariness and tiredness are synonyms defined as:

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

Other synonyms of weariness include fatigue.

weariness (noun)	tiredness (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