disapproval vs reprimand

disapproval

noun

  • The act of disapproving; condemnation. 

reprimand

noun

  • A severe, formal or official reproof; reprehension, rebuke, private or public. 

verb

  • To reprove in a formal or official way. 

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