Englishfor English speakers
flicker
—
verb
move back and forth very rapidly
the candle flickered
—
verb
(= flick)
flash intermittently
The lights flicked on and off
—
verb
shine unsteadily
The candle flickered
—
noun
a momentary flash of light
—
noun
North American woodpecker
—
noun
(= waver)
the act of moving back and forth
fusion
Noun
—
Fusion is when two or more things come together as one.
frequency
Noun
—
Something's frequency is how often it happens.
A frequency of one hertz is an event repeated once per second.
test
Noun
—
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.
—
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
—
The action of testing; to try something out to see whether it works.
He tested the software many times.