coin collector vs collector

coin collector and collector both are nouns.

Word	Noun	Adjective	Verb	Adverb
coin collector	Yes	No	No	No
collector	Yes	No	No	No

As nouns, collector is a hypernym of coin collector; that is, collector is a word with a broader meaning than coin collector:

Other hypernyms of coin collector include aggregator.

coin collector (noun)	collector (noun)
a collector and student of money (and coins in particular)	the electrode in a transistor through which a primary flow of carriers leaves the region between the electrodes
	a crater that has collected cosmic material hitting the earth
	a person who is employed to collect payments (as for rent or taxes)
	a person who collects things