You can use the word "wave" as a noun or as a verb.
Wave (noun): When a large movement of water pushes towards the shoreline, it gets larger as it approaches land:
This is a wave.
Wave (noun): Something or someone creates momentum that results in large, dense movements of people or things.
a field of grain
Wave (noun or verb): A person uses one’s hand to signal a greeting or attract attention:
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This page was first published on October 24, 2012. It was updated on April 24, 2015.