riskiness vs danger

riskiness and danger both are nouns.

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

As nouns, danger is a hypernym of riskiness; that is, danger is a word with a broader meaning than riskiness:

riskiness (noun)	danger (noun)
a state of danger involving risk	a venture undertaken without regard to possible loss or injury
	a dangerous place
	the condition of being susceptible to harm or injury
	a cause of pain or injury or loss