primordial vs unequalled

primordial

noun
  • A first principle or element. 

adj
  • first, earliest or original 

  • characteristic of the earliest stage of the development of an organism, or relating to a primordium 

  • primeval 

unequalled

adj
  • Without equal; unmatched. 

How often have the words primordial and unequalled occurred in a corpus of books? (source: Google Ngram Viewer )