saffron vs orange yellow

saffron and orange yellow both are nouns.

Word	Noun	Adjective	Verb	Adverb
saffron	Yes	No	No	No
orange yellow	Yes	No	No	No

As nouns, saffron and orange yellow are synonyms defined as:

saffron (noun)	orange yellow (noun)
a shade of yellow tinged with orange	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