What context can I use each word in?
Learn when and how to use these words with these examples!
sinus
Example
I have a sinus infection and need to see a doctor. [sinus: noun]
Example
Sinusitis can cause facial pain and pressure. [sinusitis: noun]
Example
The ethmoid sinus is located between the eyes. [ethmoid: adjective]
cavity
Example
The dentist found a cavity during my check-up. [cavity: noun]
Example
The rock had a cavity where crystals had formed. [cavity: noun]
Example
The thoracic cavity contains the heart and lungs. [thoracic: adjective]
Good things to know
Which word is more common?
Cavity is more commonly used than sinus in everyday language, as it has broader usage and is associated with dental health. Sinus is more technical and less common, but still important in medical contexts.
What’s the difference in the tone of formality between sinus and cavity?
Both sinus and cavity can be used in technical or scientific contexts, but sinus may be considered more formal due to its association with medical terminology and anatomy.
