Englishfor English speakers
constant
Adjective
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If something is constant, it doesn't change over time.
I have this constant pain in my back. I wish it would stop.
The rain has been constant all morning.
constant
Noun
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A constant is a value that doesn't change.
In the formula math7x^2+3y+5=z/math, 5 is a constant.
level
Adjective
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Even, flat, straight, smooth, horizontal. Having all parts equally as high as all other parts.
This table is not level: things are rolling off it.
level
Noun
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A level is a place that is higher or lower than some other places.
The room you want is on the third level of this building.
—
A tool for finding out whether a surface is level.
lake
Noun
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A lake is a place with a lot of deep water. A lake does not usually have salt in it.
We went swimming in the lake.