threadbare vs well-worn

threadbare and well-worn both are adjectives.

Word	Noun	Adjective	Verb	Adverb
threadbare	No	Yes	No	No
well-worn	No	Yes	No	No

As adjectives, threadbare and well-worn are synonyms defined as:

threadbare and well-worn: repeated too often; overfamiliar through overuse

Other synonyms of threadbare include banal, commonplace, hackneyed, old-hat, shopworn, stock, timeworn, tired, trite.

threadbare (adjective)	well-worn (adjective)
repeated too often; overfamiliar through overuse	repeated too often; overfamiliar through overuse
having the nap worn away so that the threads show through	showing signs of much wear or use