hotfoot vs flash

hotfoot and flash both are nouns.

Word	Noun	Adjective	Verb	Adverb
hotfoot	Yes	No	Yes	Yes
flash	Yes	Yes	Yes	No

As verbs, flash is a hyponym of hotfoot; that is, flash is a word with a more specific, narrower meaning than hotfoot:

Other hyponyms of hotfoot include barge, push forward, thrust ahead, buck, charge, shoot, shoot down, tear, dart, dash, scoot, scud, shoot.

hotfoot (noun)	flash (noun)
a practical joke that involves inserting a match surreptitiously between the sole and upper of the victim's shoe and then lighting it	a lamp for providing momentary light to take a photograph
	a bright patch of color used for decoration or identification
	a momentary brightness
	a sudden brilliant understanding
	a short news announcement concerning some on-going news story
	a burst of light used to communicate or illuminate
	a gaudy outward display
	a sudden intense burst of radiant energy
	a short vivid experience
	a very short time (as the time it takes the eye to blink or the heart to beat)

hotfoot (adjective)	flash (adjective)
	tastelessly showy

hotfoot (verb)	flash (verb)
move hurridly	appear briefly
	emit a brief burst of light
	make known or cause to appear with great speed
	protect by covering with a thin sheet of metal
	run or move very quickly or hastily
	gleam or glow intermittently
	display proudly; act ostentatiously or pretentiously
	expose or show briefly

hotfoot (adverb)	flash (adverb)
without delay; speedily