different between unparalleled vs unprecedented

English

un- +? paralleled

unparalleled (comparative more unparalleled, superlative most unparalleled)

Having no parallel; without equal; lacking anything similar or worthy of comparison.
The candidate experienced unparalleled support in the last election.

un- +? precedent +? -ed.

unprecedented (not comparable)

Never before seen, done, or experienced; without precedent.
- 2012, Christoper Zara, Tortured Artists: From Picasso and Monroe to Warhol and Winehouse, the Twisted Secrets of the World's Most Creative Minds, part 1, chapter 1, 27:
  On October 6, 1927, Warner Bros. released The Jazz Singer, the first sound-synched feature film, prompting a technological shift of unprecedented speed and unstoppable force. Within two years, nearly every studio release was a talkie.

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