uncomparable vs unrivalled

uncomparable and unrivalled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
uncomparable	No	Yes	No	No
unrivalled	No	Yes	No	No

uncomparable (adjective)	unrivalled (adjective)
such that comparison is impossible; unsuitable for comparison or lacking features that can be compared	eminent beyond or above comparison