rat vs catch

rat and catch both are nouns.

Word	Noun	Adjective	Verb	Adverb
rat	Yes	No	Yes	No
catch	Yes	No	Yes	No

As verbs, catch is a hypernym of rat; that is, catch is a word with a broader meaning than rat:

Other hypernyms of rat include capture.

rat (noun)	catch (noun)
any of various long-tailed rodents similar to but larger than a mouse	the act of catching an object with the hands
a pad (usually made of hair) worn as part of a woman's coiffure	the act of apprehending (especially apprehending a criminal)
a person who is deemed to be despicable or contemptible	a cooperative game in which a ball is passed back and forth
someone who works (or provides workers) during a strike	a fastener that fastens or locks a door or window
one who reveals confidential information to the police or other authority	a restraint that checks the motion of something
	a drawback or difficulty that is not readily evident
	a break or check in the voice (usually a sign of strong emotion)
	anything that is caught (especially if it is worth catching)
	a person regarded as a good matrimonial prospect
	the quantity that was caught

rat (verb)	catch (verb)
give away information about somebody	come down with
catch rats, especially with dogs	be struck or affected by
give (hair) the appearance of being fuller by using a rat	delay or hold up; prevent from proceeding on schedule or as planned
desert one's party or group of friends, for example, for one's personal advantage	detect a blunder or misstep
take the place of work of someone on strike	discover or come upon accidentally, suddenly, or unexpectedly; catch somebody doing something or in a certain state
employ scabs or strike breakers in	grasp with the mind or develop an understanding of
	become aware of
	be the catcher
	catch up with and possibly overtake
	take hold of so as to seize or restrain or stop the motion of
	succeed in catching or seizing, especially after a chase
	capture as if by hunting, snaring, or trapping
	to hook or entangle
	attract and fix
	cause to become accidentally or suddenly caught, ensnared, or entangled
	spread or be communicated
	take in and retain
	reach with a blow or hit in a particular spot
	apprehend and reproduce accurately
	attract; cause to be enamored
	reach in time
	hear, usually without the knowledge of the speakers
	perceive with the senses quickly, suddenly, or momentarily
	see or watch
	suffer from the receipt of
	perceive by hearing
	get or regain something necessary, usually quickly or briefly
	check oneself during an action
	start burning