contract vs expurgate

contract is a noun but expurgate is not a noun.

Word	Noun	Adjective	Verb	Adverb
contract	Yes	No	Yes	No
expurgate	No	No	Yes	No

As verbs, expurgate is a hyponym of contract; that is, expurgate is a word with a more specific, narrower meaning than contract:

Other hyponyms of contract include bowdlerise, bowdlerize, castrate, shorten, concentrate, condense, digest.

contract (noun)	expurgate (noun)
a variety of bridge in which the bidder receives points toward game only for the number of tricks he bid
a binding agreement between two or more persons that is enforceable by law
(contract bridge) the highest bid becomes the contract setting the number of tricks that the bidder must make

contract (verb)	expurgate (verb)
be stricken by an illness, fall victim to an illness	edit by omitting or modifying parts considered indelicate
make or become more narrow or restricted
become smaller or draw together
reduce in scope while retaining essential elements
compress or concentrate
enter into a contractual arrangement
make smaller
squeeze or press together
engage by written agreement