beyond vs either

beyond

adv
  • In addition; more. 

  • Farther along or away. 

  • extremely, more than 

noun
  • Something that is far beyond. 

  • The unknown. 

  • The hereafter. 

prep
  • Later than; after. 

  • Further away than. 

  • Greater than; so as to exceed or surpass. 

  • In addition to; supplementing. 

  • Past, or out of reach of. 

  • On the far side of. 

  • Not within the comprehension of. 

either

adv
  • As well. 

conj
  • Introduces the first of two (or occasionally more) options or possibilities, the second (or last) of which is introduced by “or”. 

det
  • Any one (of two). 

  • Each of two; both. 

pron
  • One or the other of two people or things. 

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