balloon flower vs Penstemon palmeri

balloon flower and Penstemon palmeri both are nouns.

Word	Noun	Adjective	Verb	Adverb
balloon flower	Yes	No	No	No
Penstemon palmeri	Yes	No	No	No

As nouns, balloon flower and Penstemon palmeri are synonyms defined as:

balloon flower and Penstemon palmeri: fragrant puffed-up white to reddish-pink flowers in long narrow clusters on erect stems; Arizona to New Mexico and Utah

Other synonyms of balloon flower include scented penstemon.

balloon flower (noun)	Penstemon palmeri (noun)
fragrant puffed-up white to reddish-pink flowers in long narrow clusters on erect stems; Arizona to New Mexico and Utah	fragrant puffed-up white to reddish-pink flowers in long narrow clusters on erect stems; Arizona to New Mexico and Utah