spinach plant vs prickly-seeded spinach

spinach plant and prickly-seeded spinach both are nouns.

Word	Noun	Adjective	Verb	Adverb
spinach plant	Yes	No	No	No
prickly-seeded spinach	Yes	No	No	No

As nouns, spinach plant and prickly-seeded spinach are synonyms defined as:

spinach plant and prickly-seeded spinach: southwestern Asian plant widely cultivated for its succulent edible dark green leaves

Other synonyms of spinach plant include spinach, Spinacia oleracea.

spinach plant (noun)	prickly-seeded spinach (noun)
southwestern Asian plant widely cultivated for its succulent edible dark green leaves	southwestern Asian plant widely cultivated for its succulent edible dark green leaves