restricted vs self-sustaining

restricted

adj
  • Available only to certain authorized groups of people. 

  • Only available to customers who do not belong to racial, ethnic or religious minorities. 

  • Limited within bounds. 

self-sustaining

adj
  • Able to provide for one's own needs without help from others; self-sufficient. 

  • Able to sustain itself without the need for additional fuel. 

  • Opposing or rejecting exterior influence; independent. 

How often have the words restricted and self-sustaining occurred in a corpus of books? (source: Google Ngram Viewer )