[{"Bold_text": "noun", "List Items": ["a coherent group of tested general propositions, commonly regarded as correct, that can be used as principles of explanation and prediction for a class of phenomena:Einstein's theory of relativity.Synonyms: doctrine , law , principle", "a proposed explanation whose status is still conjectural and subject to experimentation, in contrast to well-established propositions that are regarded as reporting matters of actual fact.Synonyms: thesis , postulate , concept , notion , idea", "Mathematics.a body of principles, theorems, or the like, belonging to one subject:number theory.", "the branch of a science or art that deals with its principles or methods, as distinguished from its practice:music theory.", "a particular conception or view of something to be done or of the method of doing it; a system of rules or principles:conflicting theories of how children best learn to read.", "contemplation or speculation:the that there is life on other planets.Synonyms: view , deduction , conclusion , judgment , opinion , thought", "guess or conjecture:My theory is that he never stops to think words have consequences.Synonyms: presumption , supposition , surmise , hypothesis"]}]