Truth is a term used to indicate various forms of accord with fact or reality, or fidelity to an original or to a standard or ideal. The opposite of truth is falsehood, which, correspondingly, can also take on logical, factual, or ethical meanings. Language and words are a means by which humans convey information to one another in semiotic associations, and the method used to recognize a truth is termed a criterion of truth. There are differing claims as to what constitutes truth, what things are truthbearers capable of being true or false, how to define and identify truth, the roles that revealed and acquired knowledge play, and whether truth is subjective or objective, relative or absolute.