Englishfor English speakers
floor
Noun
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The floor is the flat part at the bottom of a room. People stand on the floor.
Don't drop your milk on the floor.
The children are sitting on the floor to play.
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A floor is a level of a building.
To get to room 302 you have to go up three floors.
opening
Noun
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An opening is a place that someone or something can go through.
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An opening is the first time a placed is opened to other people.
We are going to the museum's opening.