hoarder vs magpie

hoarder and magpie both are nouns.

Word	Noun	Adjective	Verb	Adverb
hoarder	Yes	No	No	No
magpie	Yes	No	No	No

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

Other hyponyms of hoarder include pack rat, scavenger, miser, churl, niggard, scrooge, skinflint, penny pincher.

hoarder (noun)	magpie (noun)
a person who accumulates things and hides them away for future use	long-tailed black-and-white crow that utters a raucous chattering call
	someone who collects things that have been discarded by others
	an obnoxious and foolish and loquacious talker