unfriendly vs without prejudice

unfriendly

adj
  • Not friendly; hostile; mean. 

  • Unfavourable. 

adv
  • in an unkind or unfriendly manner; not as a friend 

noun
  • An enemy. 

without prejudice

prep
  • Not affecting nor considering other possibly related issues. 

  • Without affecting a legal interest. 

  • A term used to allow a statement or proposal in communications, while allowing the party to return to their original position without being impeded by the described statement or proposal. 

How often have the words unfriendly and without prejudice occurred in a corpus of books? (source: Google Ngram Viewer )