clear as a bell vs explicit

clear as a bell

adj

  • Totally clear; distinct and unmistakeable, as a bell's tone is clearly heard. 

explicit

adj

  • Very specific, clear, or detailed. 

  • Containing material (e.g. language or film footage) that might be deemed offensive or graphic. 

noun

  • The final few words of a text. 

How often have the words clear as a bell and explicit occurred in a corpus of books? (source: Google Ngram Viewer )