Vocabulary, articulation, grammar, diction, expressions and metaphors.
Language is a vital part of the development of the human race and of how it has set it apart from other living creatures. Although of course, we know that some intelligent animals, like dolphins, have their own “language”, however the human linguistic cognitive skill is second to none (of the known universe that is).
Language processing capabilities start at a very early age and many toddlers can already understand not only one but even two or more languages at the same time. By the age of 4 most children have grasped syntax and semantics, and this process is fascinating to follow. However mastering your linguistic potential takes a lot of effort and studying, especially since some languages are predominantly complex and include in them different nuances that are not only purely linguistic, but also cultural.
If someone is articulate, and uses proper diction, expressions and metaphors, he or she will be a better communicator throughout. Not only will people stop and listen but they will enjoy the linguistic panorama that would be painted in front of their eyes using particular words.
Some jobs require more linguistic skills than others – for example journalists, lawyers, politicians and teachers. They all need to verbalise well the concepts that they have in their brain, and whether this comes out as spoken or written word, the better their elocution, the more chance they have of passing their message across.