Those who write for a living know the importance of expanding their vocabulary to write more compelling articles. Even if your have a limited vocabulary, you can use tool such as Twinword Writer to produce more quality work. It has a built-in thesaurus, tone analyzer, word count, and semantic highlighter.
This plugin analyzes your words and suggests synonyms and related words. It can highlight not only words but also their different forms. Twinword Writer also lets you know when you are using certain words too often.