Meaning & use
activity
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Meanings
nouncountable
A specific thing done for enjoyment, learning, exercise, or a practical purpose.
Grammar: Plural activities; often preceded by adjectives like fun, group, or outdoor.
Patterns
- classroom activity
- fun activity
- group activity
The final activity asks students to map their neighborhood.
We planned a low-cost activity for the rainy afternoon.
noununcountable
The state or level of movement, action, or work happening in a place, system, or body.
Grammar: No plural in this sense; common with brain, market, seismic, or volcanic activity.
Patterns
- brain activity
- seismic activity
- level of activity
Brain activity changed during the memory test.
Seismic activity increased before the small eruption.
Word forms
| plural | activities |
|---|
Common combinations
- physical activity
- Regular physical activity supports heart health.
- group activity
- The group activity taught cooperation more than competition.
- brain activity
- Doctors monitored brain activity after the accident.
Synonyms and how they differ
- action
- Action is doing in general; activity can be one planned event or measurable movement.
- exercise
- Exercise is physical activity intended to train the body; activity is broader.
- occupation
- Occupation means work or how time is used; activity is any deed or event.
Opposites
Word family
Commonly confused: activity or act? activity or activism?
activity vs act
An act is one deed; activity is a planned pursuit or general state of movement.
activity vs activism
Activism is purposeful campaigning; activity can be neutral or recreational.
Practice
Which sentence uses activity as uncountable?
Choose one answer.
Volcanic activity names a general level of movement, not countable events. The other sentences use countable planned activities.
Make it your own
Write a sentence using “activity”, then check it and compare it with the examples above.