fire opal vs girasol

fire opal and girasol both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire opal	Yes	No	No	No
girasol	Yes	No	No	No

As nouns, fire opal and girasol are synonyms defined as:

fire opal and girasol: an opal with flaming orange and yellow and red colors

fire opal (noun)	girasol (noun)
an opal with flaming orange and yellow and red colors	tall perennial with hairy stems and leaves; widely cultivated for its large irregular edible tubers
	an opal with flaming orange and yellow and red colors