ordinary vs commonplace

ordinary and commonplace both are nouns.

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

ordinary (noun)	commonplace (noun)
(heraldry) any of several conventional figures used on shields	a trite or obvious remark
an early bicycle with a very large front wheel and small back wheel
a clergyman appointed to prepare condemned prisoners for death
a judge of a probate court
the expected or commonplace condition or situation

ordinary (adjective)	commonplace (adjective)
not exceptional in any way especially in quality or ability or size or degree	not challenging; dull and lacking excitement
lacking special distinction, rank, or status; commonly encountered	repeated too often; overfamiliar through overuse
	completely ordinary and unremarkable