kaleidoscopic vs opaline

kaleidoscopic

adj
  • Of, relating to, or produced by a kaleidoscope. 

  • Brightly coloured and continuously changing in pattern, as if in a kaleidoscope. 

opaline

adj
  • resembling opal in its iridescence; having a milky white iridescence. 

noun
  • any of several minerals resembling opal, including a variety of yellow chalcedony 

  • a clear to white liquid secreted by sea hares (genus Aplysia) that becomes viscous upon contact with water 

  • opal glass 

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