Keywords: swap, exchange, substitute
Sign Definition
As a Noun
                                            1.  The giving of one thing to someone in return for another thing from them. English = swap, exchange.
                                          
                                          
                                        As a Verb or Adjective
                                            1.  To give something to someone who gives you something else in return. English = swap, exchange.
                                          
                                          
                                         
                  
                      