saffron crocus vs saffron

saffron crocus and saffron both are nouns.

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

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

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

Other synonyms of saffron crocus include Crocus sativus.

saffron crocus (noun)	saffron (noun)
Old World crocus having purple or white flowers with aromatic pungent orange stigmas used in flavoring food	a shade of yellow tinged with orange
	dried pungent stigmas of the Old World saffron crocus
	Old World crocus having purple or white flowers with aromatic pungent orange stigmas used in flavoring food