stamp collector vs collector

stamp collector and collector both are nouns.

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

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

Other hypernyms of stamp collector include aggregator.

stamp collector (noun)	collector (noun)
a collector and student of postage stamps	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