colour vs dye

colour and dye both are nouns.

Word	Noun	Adjective	Verb	Adverb
colour	Yes	Yes	Yes	No
dye	Yes	No	Yes	No

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

colour: any material used for its color
dye: a usually soluble substance for staining or coloring e.g. fabrics or hair

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

colour (noun)	dye (noun)
a visual attribute of things that results from the light they emit or transmit or reflect	a usually soluble substance for staining or coloring e.g. fabrics or hair
the appearance of objects (or light sources) described in terms of a person's perception of their hue and lightness (or brightness) and saturation
the timbre of a musical sound
interest and variety and intensity
an outward or token appearance or form that is deliberately misleading
(physics) the characteristic of quarks that determines their role in the strong interaction
any material used for its color

colour (adjective)	dye (adjective)
having or capable of producing colors

colour (verb)	dye (verb)
change color, often in an undesired manner	color with dye
add color to	color for microscopic study
affect as in thought or feeling
give a deceptive explanation or excuse for
decorate with colors
modify or bias