different between wearisome vs weariness

English

From Middle English werisom, equivalent to weary +? -some.

wearisome (comparative more wearisome, superlative most wearisome)

From Middle English werynes, werinesse, from Old English w?ri?ness (“weariness”), equivalent to weary +? -ness.

weariness (usually uncountable, plural wearinesses)

Exhaustion, fatigue or tiredness.
- 1886-88, Richard F. Burton, The Supplemental Nights to the Thousand Nights and a Night:
  Now when he had reached the King's capital wherein was Alaeddin, he alighted at one of the Kháns; and, when he had rested from the weariness of wayfare, he donned his dress and went down to wander about the streets, where he never passed a group without hearing them prate about the pavilion and its grandeur and vaunt the beauty of Alaeddin and his lovesomeness, his liberality and generosity, his fine manners and his good morals.
A lack of interest or excitement.

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