ferment
The word ferment means a commotion or excitement. Consider that the fermentation that turns juice or grain into alcohol is the result of the agitated development of bacteria, and then you can better appreciate the word's meaning.
foment
Stand outside the school cafeteria passing out flyers with nutritional details on school food, and you may foment a revolution — foment means stirring up something undesirable, such as trouble.
Source. (vocabulary.com)
ferment
The word ferment means a commotion or excitement. Consider that the fermentation that turns juice or grain into alcohol is the result of the agitated development of bacteria, and then you can better appreciate the word's meaning.
foment
Stand outside the school cafeteria passing out flyers with nutritional details on school food, and you may foment a revolution — foment means stirring up something undesirable, such as trouble.
[Source.](https://www.vocabulary.com/articles/chooseyourwords/ferment-foment/)
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