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any specific behavior
e.g. they avoided all recreational activity
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the trait of being active
moving or acting rapidly and energetically
e.g. the level of activity declines with age
Synonym: activeness
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an organic process that takes place in the body
e.g. respiratory activity
Synonym: bodily process body process bodily function
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a process existing in or produced by nature (rather than by the intent of human beings)
e.g. the action of natural forces
e.g. volcanic activity
Synonym: natural process natural action action
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the state of being active
e.g. his sphere of activity
e.g. he is out of action
Synonym: action activeness
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(chemistry) the capacity of a substance to take part in a chemical reaction
e.g. catalytic activity