1o_ Each unit of language with its own meaning . In writing they are usually separated with spaces or punctuation marks, when talking they are separated with pauses of silence. From medieval Latin parabola ( "parable, proverb") , which in classical Latin had the same meaning as it took from the Greek 960; 945; 961; 945; 946; 959; 955; 951; ( parabolé "marginal description, by indirect comparison") . 2nd_ Broadly speaking is the ability to express yourself. 3rd_ For the above, value of the testimony or promise expressed. 4th_ In discussions it is called 'word' to the turn to speak .