heather mixture vs heather

heather mixture and heather both are nouns.

Word	Noun	Adjective	Verb	Adverb
heather mixture	Yes	No	No	No
heather	Yes	No	No	No

As nouns, heather mixture and heather are synonyms defined as:

heather mixture and heather: interwoven yarns of mixed colors producing muted greyish shades with flecks of color

heather mixture (noun)	heather (noun)
interwoven yarns of mixed colors producing muted greyish shades with flecks of color	interwoven yarns of mixed colors producing muted greyish shades with flecks of color
	common Old World heath represented by many varieties; low evergreen grown widely in the Northern Hemisphere