ordinary vs common

ordinary and common both are nouns.

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

ordinary (noun)	common (noun)
(heraldry) any of several conventional figures used on shields	a piece of open land for recreational use in an urban area
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)	common (adjective)
not exceptional in any way especially in quality or ability or size or degree	having no special distinction or quality; widely known or commonly encountered; average or ordinary or usual
lacking special distinction, rank, or status; commonly encountered	belonging to or participated in by a community as a whole; public
	commonly encountered
	of low or inferior quality or value
	being or characteristic of or appropriate to everyday language
	of or associated with the great masses of people
	to be expected; standard
	common to or shared by two or more parties
	lacking refinement or cultivation or taste