touch vs catch

touch and catch both are nouns.

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

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

touch (noun)	catch (noun)
the act of putting two things together with no space between them	the act of catching an object with the hands
the feel of mechanical action	the act of apprehending (especially apprehending a criminal)
a distinguishing style	a cooperative game in which a ball is passed back and forth
the faculty by which external objects or forces are perceived through contact with the body (especially the hands)	a fastener that fastens or locks a door or window
the sensation produced by pressure receptors in the skin	a restraint that checks the motion of something
deftness in handling matters	a drawback or difficulty that is not readily evident
the act of soliciting money (as a gift or loan)	a break or check in the voice (usually a sign of strong emotion)
a suggestion of some quality	anything that is caught (especially if it is worth catching)
a communicative interaction	a person regarded as a good matrimonial prospect
the event of something coming in contact with the body	the quantity that was caught
a slight but appreciable amount
a slight attack of illness

touch (verb)	catch (verb)
have an effect upon	come down with
color lightly	be struck or affected by
comprehend	delay or hold up; prevent from proceeding on schedule or as planned
make a more or less disguised reference to	detect a blunder or misstep
consume	discover or come upon accidentally, suddenly, or unexpectedly; catch somebody doing something or in a certain state
make physical contact with, come in contact with	grasp with the mind or develop an understanding of
be in direct physical contact with; make contact	become aware of
tamper with	be the catcher
cause to be in brief contact with	catch up with and possibly overtake
affect emotionally	take hold of so as to seize or restrain or stop the motion of
perceive via the tactile sense	succeed in catching or seizing, especially after a chase
deal with; usually used with a form of negation	capture as if by hunting, snaring, or trapping
be relevant to	to hook or entangle
to extend as far as	attract and fix
be equal to in quality or ability	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