dye vs dyestuff

dye and dyestuff both are nouns.

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

As nouns, dye and dyestuff are synonyms defined as:

dye and dyestuff: a usually soluble substance for staining or coloring e.g. fabrics or hair

dye (noun)	dyestuff (noun)
a usually soluble substance for staining or coloring e.g. fabrics or hair	a usually soluble substance for staining or coloring e.g. fabrics or hair

dye (verb)	dyestuff (verb)
color with dye
color for microscopic study