icky vs sickish

icky

adj
  • Unpleasantly sticky; yucky; disgusting. 

  • Excessively sentimental. 

  • Unwell or upset; in a bad state of mind or health. 

sickish

adj
  • Somewhat sick, but not seriously so. 

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