attest vs claim

attest

verb
  • To put under oath. 

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

  • To certify in an official capacity. 

  • To supply or be evidence of. 

  • To certify by signature or oath. 

claim

verb
  • To be entitled to anything; to deduce a right or title; to have a claim. 

  • To cause the loss of, usually by violent means. 

  • To demand ownership of. 

  • To demand ownership or right to use for land. 

  • To state a new fact, typically without providing evidence to prove it is true. 

  • To demand compensation or damages through the courts. 

noun
  • The right or ground of demanding. 

  • The thing claimed. 

  • A demand of ownership for previously unowned land. 

  • A demand of ownership made for something. 

  • A new statement of something one believes to be the truth, usually when the statement has yet to be verified or without valid evidence provided. 

  • A legal demand for compensation or damages. 

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