Nocturnal vs. nightly: what’s the difference?
The short answer
Nocturnal is primarily used to describe organisms, especially animals, that are active during the night and sleep during the day; it’s often used in scientific contexts. Nightly refers to something that occurs every night or at night and is commonly used in everyday language to describe regular evening occurrences.
What they have in common
Both words relate to the night and describe activities or occurrences associated with nighttime.
Examples
nocturnal
- Owls are nocturnal birds, active after sunset.
- The campsite was filled with the sounds of nocturnal animals.
- Many bats are nocturnal and sleep through the day.
nightly
- She has a nightly routine of reading before bed.
- The news is broadcast on TV nightly at 9 PM.
- I go for a nightly walk around the neighborhood.
Which one is more common?
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