Words and sense to be onveyed through them must go in tandem. Apartt from giving some marginal importance to words, phrases and idioms, separately, for mastering them, one should therefore develop the habit of regularly studying works that are noted for their great impact on character, social development, and the very thinking processes and avoiding reading the 'other' stuff (of which some will always grt included in your choice, anyway, due to misjudgment.) Nowadays there are a growing number of writers many of whom daring to write about even subjects they themselves never seriously studied - to whom writing is just a means of livelihood and such people care not for any beneficial purpose but only for spice, sensation and titillation of their potential readers so that they can make it to the large selling or best-selling books. Such unscrupulous writing is avoided by readers who care for both the word and sense at the same time. One reads good works in art, literature, news reports and analyses not for their words but for gaining knowledge and wisdom contained in good English (or any language of your choice), and after adequate study, try one's hand at writing good stuff that can benefit the intended readers.