hostel vs refugee camp

hostel

noun
  • A temporary refuge for the homeless providing a bed and sometimes food. 

  • A commercial overnight lodging place, with dormitory accommodation and shared facilities, especially a youth hostel. 

verb
  • To stay in a hostel during one's travels. 

  • To lodge (a person) in a hostel. 

refugee camp

noun
  • A camp where refugees seek shelter. 

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