blueweed vs Echium vulgare

blueweed and Echium vulgare both are nouns.

Word	Noun	Adjective	Verb	Adverb
blueweed	Yes	No	No	No
Echium vulgare	Yes	No	No	No

As nouns, blueweed and Echium vulgare are synonyms defined as:

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

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

blueweed (noun)	Echium vulgare (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