Portuguese heath vs Spanish heath

Portuguese heath and Spanish heath both are nouns.

Word	Noun	Adjective	Verb	Adverb
Portuguese heath	Yes	No	No	No
Spanish heath	Yes	No	No	No

As nouns, Portuguese heath and Spanish heath are synonyms defined as:

Portuguese heath and Spanish heath: erect dense shrub native to western Iberian peninsula having profuse white or pink flowers; naturalized in southwestern England

Other synonyms of Portuguese heath include Erica lusitanica.

Portuguese heath (noun)	Spanish heath (noun)
erect dense shrub native to western Iberian peninsula having profuse white or pink flowers; naturalized in southwestern England	erect dense shrub native to western Iberian peninsula having profuse white or pink flowers; naturalized in southwestern England