clear as a bell vs straightforward

clear as a bell

adj

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

straightforward

adj

  • direct; forthright; frank; sincere 

  • proceeding in a straight course or manner; not deviating 

  • easy, simple, uncomplicated, without difficulty 

adv

  • In a straightforward manner; straightforwards; straightforwardly. 

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