peril vs riskiness

peril and riskiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
peril	Yes	No	Yes	No
riskiness	Yes	No	No	No

As nouns, peril and riskiness are synonyms defined as:

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

peril (verb)	riskiness (verb)
put in a dangerous, disadvantageous, or difficult position
pose a threat to; present a danger to