catch vs dog

catch and dog both are nouns.

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

As nouns, dog is a hyponym of catch; that is, dog is a word with a more specific, narrower meaning than catch:

catch: a restraint that checks the motion of something
dog: a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward

Other hyponyms of catch include bench hook, doorstop, doorstopper, click, detent, pawl, trip, tripper.

catch (noun)	dog (noun)
the act of catching an object with the hands	a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds
the act of apprehending (especially apprehending a criminal)	a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
a cooperative game in which a ball is passed back and forth	metal supports for logs in a fireplace
a fastener that fastens or locks a door or window	a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll
a restraint that checks the motion of something	informal term for a man
a drawback or difficulty that is not readily evident	a dull unattractive unpleasant girl or woman
a break or check in the voice (usually a sign of strong emotion)	someone who is morally reprehensible
anything that is caught (especially if it is worth catching)
a person regarded as a good matrimonial prospect
the quantity that was caught

catch (verb)	dog (verb)
come down with	go after with the intent to catch
be struck or affected by
delay or hold up; prevent from proceeding on schedule or as planned
detect a blunder or misstep
discover or come upon accidentally, suddenly, or unexpectedly; catch somebody doing something or in a certain state
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