Centauria calcitrapa vs star-thistle

Centauria calcitrapa and star-thistle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Centauria calcitrapa	Yes	No	No	No
star-thistle	Yes	No	No	No

As nouns, Centauria calcitrapa and star-thistle are synonyms defined as:

Centauria calcitrapa and star-thistle: Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America

Other synonyms of Centauria calcitrapa include caltrop.

Centauria calcitrapa (noun)	star-thistle (noun)
Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America	Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America