saffron crocus vs Crocus sativus

saffron crocus and Crocus sativus both are nouns.

Word	Noun	Adjective	Verb	Adverb
saffron crocus	Yes	No	No	No
Crocus sativus	Yes	No	No	No

As nouns, saffron crocus and Crocus sativus are synonyms defined as:

saffron crocus and Crocus sativus: Old World crocus having purple or white flowers with aromatic pungent orange stigmas used in flavoring food

Other synonyms of saffron crocus include saffron.

saffron crocus (noun)	Crocus sativus (noun)
Old World crocus having purple or white flowers with aromatic pungent orange stigmas used in flavoring food	Old World crocus having purple or white flowers with aromatic pungent orange stigmas used in flavoring food