Echium vulgare vs blue thistle

Echium vulgare and blue thistle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Echium vulgare	Yes	No	No	No
blue thistle	Yes	No	No	No

As nouns, Echium vulgare and blue thistle are synonyms defined as:

Echium vulgare and blue thistle: a coarse prickly European weed with spikes of blue flowers; naturalized in United States

Other synonyms of Echium vulgare include blue devil, blueweed, viper's bugloss.

Echium vulgare (noun)	blue thistle (noun)
a coarse prickly European weed with spikes of blue flowers; naturalized in United States	a coarse prickly European weed with spikes of blue flowers; naturalized in United States