Definition of "Common" :
noun: a piece of open land for recreational use in an urban area
adjective: having no special distinction or quality; widely known or commonly encountered; average or ordinary or usual
"The common man."
adjective: belonging to or participated in by a community as a whole; public
"For the common good."
adjective: commonly encountered
"A common (or familiar) complaint."
adjective: being or characteristic of or appropriate to everyday language
"Common parlance."
adjective: of or associated with the great masses of people
"The common people in those days suffered greatly."
adjective: to be expected; standard
"Common decency."
adjective: lacking refinement or cultivation or taste
"Behavior that branded him as common."
adjective: common to or shared by two or more parties
"A common friend."
adjective: of low or inferior quality or value
"Produced...the common cloths used by the poorer population."