endangered vs everyday

endangered

adj
  • in danger, at risk, said of something where there is a strong possibility something bad will happen to it (for example, a species in danger of going extinct) 

everyday

adj
  • appropriate for ordinary use, rather than for special occasions 

  • commonplace, ordinary 

noun
  • the ordinary or routine day or occasion 

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