Englishfor English speakers
test
Noun
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A test is writing that many learners do in a room at the same time so that people are able to see how much knowledge the learners have.
I'm happy because I got a high mark on the test.
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A test is something someone does to see if something works.
The person did a good test of the machine by pushing all the buttons and watching the machine.
test
Verb
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The action of testing; to try something out to see whether it works.
He tested the software many times.
skill
Noun
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Being able to do something well. Unlike abilities, skills must usually be learned.
I go to a class every weekend to help me improve on my writing skills.