pack rat vs bushytail woodrat

pack rat and bushytail woodrat both are nouns.

Word	Noun	Adjective	Verb	Adverb
pack rat	Yes	No	No	No
bushytail woodrat	Yes	No	No	No

As nouns, pack rat and bushytail woodrat are synonyms defined as:

pack rat and bushytail woodrat: any of several bushy-tailed rodents of the genus Neotoma of western North America; hoards food and other objects

Other synonyms of pack rat include Neotoma cinerea, packrat, trade rat.

pack rat (noun)	bushytail woodrat (noun)
any of several bushy-tailed rodents of the genus Neotoma of western North America; hoards food and other objects	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