banal vs threadbare

banal and threadbare both are adjectives.

Word	Noun	Adjective	Verb	Adverb
banal	No	Yes	No	No
threadbare	No	Yes	No	No

As adjectives, banal and threadbare are synonyms defined as:

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

banal (adjective)	threadbare (adjective)
repeated too often; overfamiliar through overuse	repeated too often; overfamiliar through overuse
	having the nap worn away so that the threads show through