commons commons /ˈkɑːmənz/

noun

1. A class composed of persons lacking clerical or noble rank  ( commonality , commonalty , commons )
   a class composed of persons lacking clerical or noble rank
   
2. A pasture subject to common use  ( common land , commons )
   a pasture subject to common use
   
3. A piece of open land for recreational use in an urban area  ( commons , common , green , park )
   a piece of open land for recreational use in an urban area
    They went for a walk in the park
   they went for a walk in the park
   
   

 Commons

1. [UK] The common people  ( Commons [UK] , third estate [British] )
   the common people
   

 yard grass yard grass /jɑːrd græs/

noun

1. Coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere  ( Eleusine indica , goose grass , wire grass , yard grass , yardgrass )
   coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere
   
   

 orange tree orange tree /ˈɔːrɪndʒ triː/

noun

1. Any citrus tree bearing oranges  ( orange tree , orange )
   any citrus tree bearing oranges
     I peeled the orange and savored its juicy segments.
   I peeled the orange and savored its juicy segments.
   
   

 separator separator /ˈsɛpəˌreɪtər/

noun

1. An apparatus that uses centrifugal force to separate particles from a suspension  ( extractor , separator , centrifuge )
   an apparatus that uses centrifugal force to separate particles from a suspension
    The laboratory technician placed the samples in the centrifuge to separate the components.
   The laboratory technician placed the samples in the centrifuge to separate the components.