repellent vs unwelcome

repellent

adj
  • Resistant or impervious to something. 

  • Repulsive, inspiring aversion. 

  • Tending or able to repel; driving back. 

noun
  • Someone who repels. 

  • A substance used to repel insects, other pests, or dangerous animals. 

  • A substance or treatment for a fabric etc to make it impervious to something. 

unwelcome

adj
  • Not welcome. 

verb
  • To treat as unwelcome. 

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