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English definition of “common”

common

adjective  /ˈkɑm·ən/ us  

common adjective (USUAL)

found frequently in many places or among many people: Money worries are a common problem for people raising children.

common adjective (SHARED)

[not gradable] belonging to or shared by two or more people or things: Guilt and forgiveness are themes common to all of her works.
commonly
adverb  /ˈkɑm·ən·li/ us  
"The" is the most commonly used word in English.

common

noun [C]  /ˈkɑm·ən/ us  

common noun [C] (LAND)

an area of grassy land that is open for everyone to use, usually near the center of a town or city: The Boston Common is the oldest park in the US.
(Definition of common from the Cambridge Academic Content Dictionary © Cambridge University Press)
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