collector

nouns

a person who collects things
a person who is employed to collect payments (as for rent or taxes)
is derived from
a crater that has collected cosmic material hitting the earth
is a type of (narrower)
a bowl-shaped depression formed by the impact of a meteorite or bomb
the electrode in a transistor through which a primary flow of carriers leaves the region between the electrodes
is a part of
a semiconductor device capable of amplification
is a type of (narrower)
a conductor used to make electrical contact with some part of a circuit