liberty vs shore leave

liberty

noun
  • A short period when a sailor is allowed ashore. 

  • A breach of social convention. 

  • The condition of being free to act, believe or express oneself as one chooses. 

  • A local division of government administration in medieval England. 

  • The condition of being free from control or restrictions. 

  • Freedom from excessive government control. 

  • The condition of being free from imprisonment, slavery or forced labour. 

  • An empty space next to a group of stones of the same color. 

shore leave

noun
  • Free time given to sailors of the military navy when they are off duty and allowed to disembark and spend time on land. 

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