[{"Bold_text": "noun", "List Items": ["Geology.unbroken solid rock ,overlaid in most places by soil or rock .", "bottom layer; lowest stratum.", "any firm foundation or basis:Technical courses will be founded on a bedrock of sound, general education so as to produce a well-rounded engineer.", "the fundamental principles, as of a teaching, belief, or science:Let's away the cant and get down to bedrock."]}, {"Bold_text": "adjective", "List Items": ["basic; fundamental."]}]