This is possible because language is not the only symbolic means of communication. In order to prove that chimpanzees and gorillas are capable of language, and not simply a different kind of symbolic communication system, they must learn a sign language with the basic characteristics of human language.
Definition of Halloween. : October 31 observed especially with dressing up in disguise, trick-or-treating, and displaying jack-o'-lanterns during the evening.
Circuit Calavera and Calacas. October is a month of many holidays and raising awareness and though Halloween is one of the most well recognized holidays of the month, there is another following that is well celebrated across Latin America and the United States.