Meaning: the process of planting trees in an area where there were no trees

Part of speech: noun

Example: Afforestation helps combat climate change.

Category: Environment › Forestry

Synonyms:

• reforestation
• tree planting

Meaning: The condition of the air in terms of pollution and cleanliness.

Part of speech: noun

Example: The air quality in the city improved after the new regulations.

Category: Environment › Pollution

Meaning: A day dedicated to planting trees.

Part of speech: noun

Example: We celebrate Arbor Day by planting new trees.

Category: Environment › Conservation

Synonyms: tree planting day