attest vs bespeak

attest

verb
  • To affirm to be correct, true, or genuine. 

  • To certify in an official capacity. 

  • To put under oath. 

  • To supply or be evidence of. 

  • To certify by signature or oath. 

bespeak

verb
  • To speak up or out; exclaim; speak. 

  • To betoken; show; indicate; foretell; suggest; allude to. 

  • To speak about; tell of; relate; discuss. 

  • To speak for beforehand; engage in advance; make arrangements for; order or reserve in advance. 

  • To stipulate, solicit, ask for, or request, as in a favour. 

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