Keywords: nod, affirm, affirmation, approve, approval, yes, acceptance
Found 2 variants for this sign (click on video to enlarge):
Sign Definition
As a Noun
                                            1.  A statement in which you say something is true, usually by moving your head up an down. English = nod.
                                          
                                          
                                        
                                            2.  A statement in which you say something is true, especially when it has been claimed to be not true of you. English = affirmation.
                                          
                                          
                                        
                                            3.  The saying of yes to an offer. English = acceptance.
                                          
                                          
                                        
                                            4.  The act of saying you like something and that it is acceptable. English = approval.
                                          
                                          
                                        As a Verb or Adjective
                                            1.  To nod your head up and down as a way of indicating your answer or response to something is 'yes'; to say yes. Idiomatic English = give the nod.
                                          
                                          
                                        
                                            2.  To say that something is true, especially when it has been claimed to be not true of you. English = affirm.
                                          
                                          
                                        
                                            3.  To give someone permission to do something; to okay something.
                                          
                                          
                                        
                                            4.  To accept an offer of something; to say something is acceptable. English = approve.
                                          
                                          
                                        Interactive
                                            1.  Used alone to say yes, give acceptance or show approval. English = 'Yes!'
                                          
                                          
                                         
                  
                      