It’s not just about the direct meaning of words, you also have to be mindful of the emotional overtones they carry.

A wide vocabulary is important for a person’s language proficiency, and boosts the skills of listening, speaking, reading and writing. In short, a wide vocabulary helps effective communication.

Appropriate vocabulary is important because people have to express their ideas clearly and forcefully. Attention must be given to the connotation of the chosen words in your message. The implicit meaning of the chosen words will arouse the listener, speaker or reader to respond either positively or negatively to your message.

For instance, writers choose words both for what they mean (that is, their dictionary meanings or denotations) and for what they suggest (their connotations, or emotional associations).

For instance, ‘slim’, ‘scrawny’ and ‘svelte’ all have related denotative meanings (thin) but different connotative meanings. And if we’re trying to pay someone a compliment, we better get the connotation right.

When someone calls a woman ‘scrawny’ or ‘skinny’ he has described the woman with negative connotations. If he wants to describe that woman in a positive tone, he will call her “slim” or “svelte”. Svelte means slim, elegant and stylish, and describes a woman in an attractive light.