common in WordNet English dictionary

1. of low or inferior quality or value
   "of what coarse metal ye are molded"- Shakespeare; "produced...the common cloths used by the poorer population"
   coarse  common 
   
2. lacking refinement or cultivation or taste
   "he had coarse manners but a first-rate mind"; "behavior that branded him as common"; "an untutored and uncouth human being"; "an uncouth soldier--a real tough guy"; "appealing to the vulgar taste for violence"; "the vulgar display of the newly rich"
   coarse  common  rough-cut  uncouth  vulgar 
   
3. having no special distinction or quality; widely known or commonly encountered; average or ordinary or usual
   "the common man"; "a common sailor"; "the common cold"; "a common nuisance"; "followed common procedure"; "it is common knowledge that she lives alone"; "the common housefly"; "a common brand of soap"
   common 
   
4. belonging to or participated in by a community as a whole; public
   "for the common good"; "common lands are set aside for use by all members of a community"
   common 
   
5. commonly encountered
   "a common (or familiar) complaint"; "the usual greeting"
   common  usual 
   
6. being or characteristic of or appropriate to everyday language
   "common parlance"; "a vernacular term"; "vernacular speakers"; "the vulgar tongue of the masses"; "the technical and vulgar names for an animal species"
   common  vernacular  vulgar 
   
7. of or associated with the great masses of people
   "the common people in those days suffered greatly"; "behavior that branded him as common"; "his square plebeian nose"; "a vulgar and objectionable person"; "the unwashed masses"
   common  plebeian  vulgar  unwashed 
   
8. to be expected; standard
   "common decency"
   common 
   
9. common to or shared by two or more parties
   "a common friend"; "the mutual interests of management and labor"
   common  mutual 
   

1. a piece of open land for recreational use in an urban area
   "they went for a walk in the park"
   park  commons  common  green