flash vs gleaming

flash and gleaming both are nouns.

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

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

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

flash (noun)	gleaming (noun)
a lamp for providing momentary light to take a photograph	an appearance of reflected light
a bright patch of color used for decoration or identification	a flash of light (especially reflected light)
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)	gleaming (adjective)
tastelessly showy	bright with a steady but subdued shining

flash (verb)	gleaming (verb)
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