Your senses provide data to your brain– smell, touch, sound, taste and sight – and the brain comes up with an interpretation ‘according to your mind’. Your mind’s interpretation is based on your own beliefs, values, mental labels and experience. When you express your interpretation, you are limited by your own vocabulary. When a person hears you, they will interpret your words based on their own limited (or better) vocabulary. You cannot control other people’s vocabulary but you can certainly expand yours so that you can give them a rich array of words, one of which will communicate your true interpretation. I am not talking about acquiring complex vocabulary for the sake of impressing people; rather, I am talking about having a broad vocabulary so you have many words in your 'arsenal' to communicate effectively.
I will illustrate with an incident from my middle school days. I was talking to my father about some trouble I was having at school. I told him that the trouble was like epileptic fits. My father thought that I had epileptic fits and became alarmed. What I meant to say was that the trouble at school was intermittent. But, my vocabulary in middle school was limited. Could better vocabulary improve your communications and help you become more effective?