collector vs packrat

collector and packrat both are nouns.

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

As nouns, packrat is a hyponym of collector; that is, packrat is a word with a more specific, narrower meaning than collector:

collector (noun)	packrat (noun)
the electrode in a transistor through which a primary flow of carriers leaves the region between the electrodes	any of several bushy-tailed rodents of the genus Neotoma of western North America; hoards food and other objects
a crater that has collected cosmic material hitting the earth	a collector of miscellaneous useless objects
a person who is employed to collect payments (as for rent or taxes)
a person who collects things