flashpoint vs criticality

flashpoint and criticality both are nouns.

Word	Noun	Adjective	Verb	Adverb
flashpoint	Yes	No	No	No
criticality	Yes	No	No	No

As nouns, criticality is a hypernym of flashpoint; that is, criticality is a word with a broader meaning than flashpoint:

flashpoint: point at which something is ready to blow up
criticality: a critical state; especially the point at which a nuclear reaction is self-sustaining

flashpoint (noun)	criticality (noun)
the lowest temperature at which the vapor of a combustible liquid can be ignited in air	a state of critical urgency
a place of political unrest and potential violence	a critical state; especially the point at which a nuclear reaction is self-sustaining
point at which something is ready to blow up