threat vs danger

threat and danger both are nouns.

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

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

threat (noun)	danger (noun)
a warning that something unpleasant is imminent	a venture undertaken without regard to possible loss or injury
declaration of an intention or a determination to inflict harm on another	a dangerous place
a person who inspires fear or dread	the condition of being susceptible to harm or injury
something that is a source of danger	a cause of pain or injury or loss