point vs touch on

point is a noun but touch on is not a noun.

Word	Noun	Adjective	Verb	Adverb
point	Yes	No	Yes	No
touch on	No	No	Yes	No

As verbs, touch on is a hypernym of point; that is, touch on is a word with a broader meaning than point:

point: repair the joints of bricks
touch on: restore by replacing a part or putting together what is torn or broken

Other hypernyms of point include bushel, doctor, fix, furbish up, mend, repair, restore.

point (noun)	touch on (noun)
sharp end
a wall socket
the gun muzzle's direction
a contact in the distributor; as the rotor turns its projecting arm contacts them and current flows to the spark plugs
the property of a shape that tapers to a sharp tip
an outstanding characteristic
a distinguishing or individuating characteristic
a geometric element that has position but no extension
an isolated fact that is considered separately from the whole
the object of an activity
a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations
a brief version of the essential meaning of something
a V-shaped mark at one end of an arrow pointer
a distinct part that can be specified separately in a group of things that could be enumerated on a list
the dot at the left of a decimal fraction
the precise location of something; a spatially limited location
a promontory extending out into a large body of water
one percent of the total principal of a loan; it is paid at the time the loan is made and is independent of the interest on the loan
a linear unit used to measure the size of type; approximately 1/72 inch
the unit of counting in scoring a game or contest
any of 32 horizontal directions indicated on the card of a compass
a style in speech or writing that arrests attention and has a penetrating or convincing quality or effect
a V shape
a very small circular shape
a specific identifiable position in a continuum or series or especially in a process
an instant of time

point (verb)	touch on (verb)
give a point to	restore by replacing a part or putting together what is torn or broken
repair the joints of bricks	have an effect upon
indicate a place, direction, person, or thing; either spatially or figuratively	refer to or discuss briefly
indicate the presence of (game) by standing and pointing with the muzzle	be relevant to
be a signal for or a symptom of
direct into a position for use
be positionable in a specified manner
intend (something) to move towards a certain goal
mark with diacritics
mark (a psalm text) to indicate the points at which the music changes
mark (Hebrew words) with diacritics
direct the course; determine the direction of travelling
sail close to the wind
be oriented