timeworn vs commonplace

timeworn is not a noun while commonplace is a noun.

Word	Noun	Adjective	Verb	Adverb
timeworn	No	Yes	No	No
commonplace	Yes	Yes	No	No

As adjectives, timeworn and commonplace are synonyms defined as:

timeworn and commonplace: repeated too often; overfamiliar through overuse

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

timeworn (noun)	commonplace (noun)
	a trite or obvious remark

timeworn (adjective)	commonplace (adjective)
repeated too often; overfamiliar through overuse	not challenging; dull and lacking excitement
	repeated too often; overfamiliar through overuse
	completely ordinary and unremarkable