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.
Halloween Origins. Halloween Origins: What are the different names? Although Halloween origins began with the Celtic druids over 2,000 years ago, the seasonal practices are observed in many countries. Halloween falls within the Fall Equinox that starts from September 23 through November 4 approximately.