trouble spot vs flashpoint

trouble spot and flashpoint both are nouns.

Word	Noun	Adjective	Verb	Adverb
trouble spot	Yes	No	No	No
flashpoint	Yes	No	No	No

As nouns, trouble spot and flashpoint are synonyms defined as:

trouble spot and flashpoint: a place of political unrest and potential violence

Other synonyms of trouble spot include hot spot, hotspot.

trouble spot (noun)	flashpoint (noun)
a place of political unrest and potential violence	the lowest temperature at which the vapor of a combustible liquid can be ignited in air
a place where trouble exists or occurs regularly	a place of political unrest and potential violence
	point at which something is ready to blow up