multiformity vs variegation

multiformity

noun
  • The quality of being multiform, or having many forms. 

variegation

noun
  • The state of being variegated; streaked, spotted. 

  • A variation in the colour of different zones of the same plant. 

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