clef vs conceive

clef

noun
  • A symbol found on a musical staff that indicates the pitches represented by the lines and the spaces on the staff 

conceive

verb
  • To understand (someone). 

  • To generate or engender; to bring into being. 

  • To develop an idea; to form in the mind; to plan; to devise; to originate. 

  • To become pregnant (with). 

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