olympian vs prodigious

olympian and prodigious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
olympian	No	Yes	No	No
prodigious	No	Yes	No	No

As adjectives, olympian and prodigious are synonyms defined as:

olympian and prodigious: far beyond what is usual in magnitude or degree

Other synonyms of olympian include exceeding, exceptional, surpassing.

olympian (adjective)	prodigious (adjective)
far beyond what is usual in magnitude or degree	far beyond what is usual in magnitude or degree
majestic in manner or bearing; superior to mundane matters	so great in size or force or extent as to elicit awe
	of momentous or ominous significance