flash vs splurge

flash and splurge both are nouns.

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

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

Other hyponyms of flash include bluster, bravado, exhibitionism, ritz, pedantry.

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

Other hyponyms of flash include flex.

flash (noun)	splurge (noun)
a lamp for providing momentary light to take a photograph	any act of immoderate indulgence
a bright patch of color used for decoration or identification	an ostentatious display (of effort or extravagance etc.)
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)

flash (adjective)	splurge (adjective)
tastelessly showy

flash (verb)	splurge (verb)
appear briefly	be showy or ostentatious
emit a brief burst of light	indulge oneself
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