[{"Bold_text": "adjective", "List Items": ["outside, or outside, the limits of the earth:People on earth have long speculated about the idea of extraterrestrial life.Cataclysmic wildfires could be expected if earth were to take an extraterrestrial hit."]}, {"Bold_text": "noun", "List Items": ["a being originating from beyond the earth; an alien from outer space:It was your typical sci-fi novel about extraterrestrials conquering the earth."]}]