bundle up vs bundle

bundle up is not a noun while bundle is a noun.

Word	Noun	Adjective	Verb	Adverb
bundle up	No	No	Yes	No
bundle	Yes	No	Yes	No

As verbs, bundle up and bundle are synonyms defined as:

Other synonyms of bundle up include roll up.

bundle up (noun)	bundle (noun)
	a package of several things tied together for carrying or storing
	a collection of things wrapped or boxed together
	a large sum of money (especially as pay or profit)

bundle up (verb)	bundle (verb)
dress warmly	sleep fully clothed in the same bed with one's betrothed
make into a bundle	make into a bundle
	compress into a wad
	gather or cause to gather into a cluster