Rainbow vs. Iridescent

Difference Between Rainbow and Iridescent
Rainbownoun
An arc of spectral colors, usually identified as red, orange, yellow, green, blue, indigo, and violet, that appears in the sky opposite the sun as a result of the refractive dispersion of sunlight in drops of rain or mist.
Iridescentadjective
Producing a display of lustrous, rainbowlike colors
an iridescent oil slick.iridescent plumage.Rainbownoun
A similar arc or band, as one produced by a prism or by iridescence.
Iridescentadjective
Brilliant, lustrous, or colorful in effect or appearance
"The prelude was as iridescent as a prism in a morning room" (Carson McCullers).Rainbownoun
A graded display of colors.
Iridescentadjective
(not comparable) Producing a display of lustrous, rainbow-like colors; prismatic.
Rainbownoun
An illusory hope
chasing the rainbow of overnight success.Iridescentadjective
Brilliant, lustrous, or colorful.
Rainbownoun
A diverse assortment or collection.
Iridescentadjective
varying in color when seen in different lights or from different angles;
changeable taffetachatoyant (or shot) silka dragonfly hovered, vibrating and iridescentRainbownoun
A multicoloured arch in the sky, produced by prismatic refraction of light within droplets of rain in the air.
Iridescentadjective
having a play of lustrous rainbow-like colors;
an iridescent oil slicknacreous (or pearlescent) clouds looking like mother-of-pearla milky opalescent (or opaline) lusterRainbownoun
Any prismatic refraction of light showing a spectrum of colours.
Rainbownoun
(often used with “of”) A wide assortment; a varied multitude.
a rainbow of possibilitiesRainbownoun
(figurative) An illusion, mirage.
Many electoral promises are rainbows, vanishing soon after poll day.Rainbownoun
(baseball) A curveball, particularly a slow one.
Rainbownoun
(poker slang) In Texas hold 'em or Omaha hold 'em, a flop that contains three different suits.
Rainbownoun
Rainbow trout.
Rainbowadjective
Multicolored.
Rainbowadjective
Made up of several races or ethnicities, or (more broadly) of several cultural or ideological factions.
Rainbowadjective
(attributive) LGBT.
Rainbowadjective
Composed entirely of different suits.
Rainbowverb
(transitive) To brighten with, or as with, a rainbow; to pattern with the colours of the rainbow.
Rainbowverb
(intransitive) To take the appearance of a rainbow.
Rainbownoun
an arc of colored light in the sky caused by refraction of the sun's rays by rain
Rainbownoun
an illusory hope;
chasing rainbows