multiform vs multitudinous

multiform

adj
  • Having more than one shape or appearance. 

noun
  • An organism, folktale, etc. that appears in more than one form. 

multitudinous

adj
  • Comprising a large number of parts. 

  • Crowded with many people. 

  • Coming from or produced by a large number of beings or objects. 

  • Existing in great numbers; innumerable. 

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