Englishfor English speakers
participant
Noun
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A participant is a person who takes part in something.
The athlete was a participant at the Olympic Games.
assembly
Noun
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A group of people who came together for an event.
She stood in front of the assembly and started to talk.
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The act of people or things coming together.
It took a few minutes for the assembly of everything she needed to bring with her.
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The act of making something by putting parts together.
We bought a desk, but we didn't know it needed assembly at home.