Bellflower and Rampion

Bellflower noun - Any of various plants of the genus Campanula having blue or white bell-shaped flowers.

Rampion and bellflower are semantically related. In some cases you can replace term "Rampion" with "Bellflower", this nouns are similar.

Rampion noun - Bellflower of Europe and Asia and North Africa having bluish flowers and an edible tuberous root used with the leaves in salad.

Bellflower and rampion are semantically related. You can use "Bellflower" instead a noun "Rampion".