oxtongue vs bugloss

oxtongue and bugloss both are nouns.

Word	Noun	Adjective	Verb	Adverb
oxtongue	Yes	No	No	No
bugloss	Yes	No	No	No

As nouns, oxtongue and bugloss are synonyms defined as:

oxtongue and bugloss: widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States

Other synonyms of oxtongue include bitterweed, bristly oxtongue, Picris echioides.

oxtongue (noun)	bugloss (noun)
widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States	perennial or biennial herb cultivated for its delicate usually blue flowers
	widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States