sheltered vs unsafe

sheltered

adj
  • Protected, as from wind or weather. 

  • (Of a person) who grew up being overprotected by parents or other guardians; often implies a lack of social skills or worldly experience 

unsafe

verb
  • To remove the safety from (a weapon). 

adj
  • Not safe (various senses); dangerous. 

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