Lessen vs. Lesson
Lessen
Definition
Lessen is a verb that means to reduce in amount, degree, or intensity.
Lesson
Definition
Lesson is a noun that refers to a unit of instruction or a period of learning.
Example
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We need to lessen our impact on the environment.
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Taking deep breaths can help lessen stress.
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The new regulations aim to lessen air pollution in the city.
Example
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Today’s lesson is about the water cycle.
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I learned an important lesson from my mistake.
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The teacher assigned a homework lesson to reinforce the concepts discussed in class.