suntan vs yellowish

suntan

verb
  • To attempt to obtain a suntan. 

  • To obtain a suntan by exposure to ultraviolet light. 

noun
  • In humans a brown or darkened coloration of the skin caused by exposure to ultraviolet light. 

yellowish

adj
  • Somewhat yellow (in colour). 

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