common motor common multiple common multiples common myth common myths common nail common name common names common national common natural common nature common need common needs common negative common network common neurological common nickname common node common nomenclature common north common not common notion common noun common nouns common number common object common objections common objective common objectives common objects common obstacles common occupation common occupational common occupations common occurrence common occurrences common office common one common ones common online common open common operating common operation common operational common operations common opinion common optical common option common options common or garden common organic common organisation of the market common organisation of the markets common organization common origin common outcome common outlet common output common ownership common pain common parasites common parlance common part common parts common passion common passwords common past common path common pathology common pathway common pattern common patterns common payment common people common perception common performance common peripheral common person common pest common pests common phenomenon common phrase common phrases common physical common piece common pitfalls common place common places common plan common plane common plant common plants common platform common platforms common point common points common policies common policy common political