myriad vs several

myriad

adj
  • Great in number; innumerable, multitudinous 

  • Multifaceted, having innumerable elements 

noun
  • A countless number or multitude (of specified things) 

  • Ten thousand; 10,000 

several

adj
  • A number of different; various. 

  • Separable, capable of being treated separately. 

noun
  • Each particular taken singly; an item; a detail; an individual. 

det
  • Consisting of a number more than two but not very many. 

adv
  • By itself; severally. 

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