What context can I use each word in?
Learn when and how to use these words with these examples!
circadian
Example
Our circadian rhythm helps us maintain a regular sleep schedule. [circadian: adjective]
Example
Jet lag occurs when our circadian rhythm is disrupted due to travel across time zones. [circadian: noun]
diurnal
Example
Humans are diurnal creatures, being most active during the day. [diurnal: adjective]
Example
Many birds are diurnal and can be seen flying and singing during daylight hours. [diurnal: noun]
Good things to know
Which word is more common?
Diurnal is more commonly used than circadian in everyday language. Diurnal is a versatile word that can be used to describe various activities or organisms that are active during the daytime. On the other hand, circadian is more specialized and is primarily used in scientific or medical contexts.
What’s the difference in the tone of formality between circadian and diurnal?
While diurnal can be used in both formal and informal contexts, circadian is more commonly used in technical or scientific settings, making it more formal in nature.
