What context can I use each word in?
Learn when and how to use these words with these examples!
estuary
Example
The Hudson River estuary is an important habitat for many species of fish. [estuary: noun]
Example
The estuary is where the river meets the sea. [estuary: noun]
mouth
Example
The Mississippi River flows into the Gulf of Mexico at its mouth. [mouth: noun]
Example
She opened her mouth to speak but then changed her mind. [mouth: noun]
Good things to know
Which word is more common?
Mouth is a more commonly used word than estuary in everyday language, due to its versatility and multiple meanings. Estuary is a more specialized term that is typically used in scientific or geographic contexts.
What’s the difference in the tone of formality between estuary and mouth?
Estuary is a more formal and scientific term, while mouth is more versatile and can be used in both formal and informal contexts.
