hazardousness vs danger

hazardousness and danger both are nouns.

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

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

hazardousness (noun)	danger (noun)
the state of being dangerous	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