Englishfor English speakers
constant
Adjective
—
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
—
A constant is a value that doesn't change.
In the formula math7x^2+3y+5=z/math, 5 is a constant.
duty
Noun
—
A duty is something that you should do.
Parents have the duty to educate their children.
—
A tax placed on imports or exports; a tariff, customs duty, excise duty.
Import duty and taxes are due when importing goods into the United States.