peril vs touch on

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

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

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

Other hypernyms of peril include affect, bear on, bear upon, impact, touch.

peril (noun)	touch on (noun)
a venture undertaken without regard to possible loss or injury
a source of danger; a possibility of incurring loss or misfortune
a state of danger involving risk

peril (verb)	touch on (verb)
put in a dangerous, disadvantageous, or difficult position	restore by replacing a part or putting together what is torn or broken
pose a threat to; present a danger to	have an effect upon
	refer to or discuss briefly
	be relevant to