flash vs sparkle

flash and sparkle both are nouns.

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

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

Other hyponyms of flash include flicker, glint, spark, gleam, gleaming, glimmer, coruscation, glitter, heat flash, lightning, streak.

flash (noun)	sparkle (noun)
a lamp for providing momentary light to take a photograph	the quality of shining with a bright reflected light
a bright patch of color used for decoration or identification	merriment expressed by a brightness or gleam or animation of countenance
a momentary brightness	the occurrence of a small flash or spark
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)

flash (adjective)	sparkle (adjective)
tastelessly showy

flash (verb)	sparkle (verb)
appear briefly	become bubbly or frothy or foaming
emit a brief burst of light	be lively or brilliant or exhibit virtuosity
make known or cause to appear with great speed	reflect brightly
protect by covering with a thin sheet of metal	emit or produce sparks
run or move very quickly or hastily
gleam or glow intermittently
display proudly; act ostentatiously or pretentiously
expose or show briefly