dyer's woodruff vs Asperula tinctoria

dyer's woodruff and Asperula tinctoria both are nouns.

Word	Noun	Adjective	Verb	Adverb
dyer's woodruff	Yes	No	No	No
Asperula tinctoria	Yes	No	No	No

As nouns, dyer's woodruff and Asperula tinctoria are synonyms defined as:

dyer's woodruff and Asperula tinctoria: creeping European perennial having red or pinkish-white flowers and red roots sometimes used as a substitute for madder in dyeing

dyer's woodruff (noun)	Asperula tinctoria (noun)
creeping European perennial having red or pinkish-white flowers and red roots sometimes used as a substitute for madder in dyeing	creeping European perennial having red or pinkish-white flowers and red roots sometimes used as a substitute for madder in dyeing