pork barrel vs pork

pork barrel and pork both are nouns.

Word	Noun	Adjective	Verb	Adverb
pork barrel	Yes	No	No	No
pork	Yes	No	No	No

As nouns, pork barrel and pork are synonyms defined as:

pork barrel and pork: a legislative appropriation designed to ingratiate legislators with their constituents

pork barrel (noun)	pork (noun)
a legislative appropriation designed to ingratiate legislators with their constituents	meat from a domestic hog or pig
	a legislative appropriation designed to ingratiate legislators with their constituents