spinach vs prickly-seeded spinach

spinach and prickly-seeded spinach both are nouns.

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

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

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

Other synonyms of spinach include spinach plant, Spinacia oleracea.

spinach (noun)	prickly-seeded spinach (noun)
dark green leaves; eaten cooked or raw in salads	southwestern Asian plant widely cultivated for its succulent edible dark green leaves
southwestern Asian plant widely cultivated for its succulent edible dark green leaves