Englishfor English speakers
upside
—
noun
(= top, top side)
the highest or uppermost side of anything
put your books on top of the desk
only the top side of the box was painted
down
Preposition
—
Toward the earth, away from the sky.
What goes up on earth must fall down.
—
Toward the bottom.
—
Towards a smaller price, number, amount, etc.
I'm going to buy a computer once prices go down.
down
Noun
—
Down is soft feathers or a covering of soft feathers.
That pillow is full of down.
diode
—
noun
a semiconductor that consists of a p-n junction
—
noun
a thermionic tube having two electrodes; used as a rectifier