What context can I use each word in?
Learn when and how to use these words with these examples!
phlegm
Example
He cleared his throat of phlegm before speaking. [phlegm: noun]
Example
The cold caused her to produce a lot of phlegm. [phlegm: noun]
mucus
Example
The doctor examined the mucus sample under a microscope. [mucus: noun]
Example
The body produces mucus to protect the respiratory system from harmful particles. [mucus: noun]
Good things to know
Which word is more common?
Mucus is a more common term than phlegm in everyday language, as it is used to describe a broader range of bodily fluids. Phlegm is a more specific term that is typically used in medical contexts.
What’s the difference in the tone of formality between phlegm and mucus?
Phlegm is a more formal term than mucus, as it is primarily used in medical contexts. Mucus is a more versatile term that can be used in both formal and informal contexts.
