contract vs overbear

contract is a noun but overbear is not a noun.

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

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

Other hyponyms of contract include choke, strangle, prim, astringe, strangulate, convulse, convulse, bear down, choke, fret, gag, choke, scrag.

contract (noun)	overbear (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)	overbear (verb)
be stricken by an illness, fall victim to an illness	contract the abdominal muscles during childbirth to ease delivery
make or become more narrow or restricted	bear too much
become smaller or draw together	overcome
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