magpie vs pack rat

magpie and pack rat both are nouns.

Word	Noun	Adjective	Verb	Adverb
magpie	Yes	No	No	No
pack rat	Yes	No	No	No

As nouns, magpie and pack rat are synonyms defined as:

magpie and pack rat: someone who collects things that have been discarded by others

Other synonyms of magpie include scavenger.

magpie (noun)	pack rat (noun)
long-tailed black-and-white crow that utters a raucous chattering call	any of several bushy-tailed rodents of the genus Neotoma of western North America; hoards food and other objects
someone who collects things that have been discarded by others	someone who collects things that have been discarded by others
an obnoxious and foolish and loquacious talker