What context can I use each word in?
Learn when and how to use these words with these examples!
delta
Example
The Nile River delta is one of the largest deltas in the world. [delta: noun]
Example
The Mississippi River delta is constantly changing due to erosion and sediment deposition. [delta: noun]
mouth
Example
She burned her mouth on the hot soup. [mouth: noun]
Example
The Amazon River mouth is the largest river mouth in the world. [mouth: noun]
Good things to know
Which word is more common?
Mouth is more commonly used than delta in everyday language, as it has multiple meanings and can be used in various contexts. Delta is less common and is mostly used in geography and geology contexts.
What’s the difference in the tone of formality between delta and mouth?
Both delta and mouth are neutral in terms of formality and can be used in both formal and informal contexts.