acknowledge vs taboo

acknowledge

verb
  • To own as genuine or valid; to assent to (a legal instrument) to give it validity; to avow or admit in legal form. 

  • To own or recognize in a particular quality, character or relationship; to admit the claims or authority of; to give recognition to. 

  • To be grateful of (e.g. a benefit or a favour) 

  • To admit the knowledge of; to recognize as a fact or truth; to declare one's belief in 

  • To report (the receipt of a message to its sender). 

taboo

noun
  • An inhibition or ban that results from social custom or emotional aversion. 

  • Something which may not be used, approached or mentioned because it is sacred. 

verb
  • To ban. 

  • To avoid. 

  • To mark as taboo. 

adj
  • Culturally forbidden. 

  • Excluded or forbidden from use, approach or mention. 

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