concealing vs hiding

concealing

noun
  • Material, etc., that conceals something. 

hiding

noun
  • A state of concealment. 

  • A place of concealment. 

  • A beating or spanking. 

  • Skinning (of an animal) to yield a hide (for human use). 

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