rehearsal vs rehearsing

rehearsal

noun
  • A preparatory activity analogous to the rehearsal of a show. 

  • The act of rehearsing or contriving something; the fact of something's being rehearsed. 

  • The practicing of something which is to be performed before an audience, usually to test or improve the interaction between several participating people, or to allow technical adjustments with respect to staging to be done. 

rehearsing

noun
  • A rehearsal. 

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