Language is the main factor leading and affecting communication. If it is employed correctly, effective communication can take place. If not, there will be a breakdown in communication which may not be realized by every one at the time. When the expected action from communication fails to take place or when the objective of communication wasn’t fulfilled, it means the failure of communication. To create effective communication with others your language must be understandable to those whom you address. To realize that you should take the following into account: 1. Most words have more than one meaning and sometimes several meanings. So you should ensure that the receiver understands the words with the meaning you want. 2. Many groups of people use common words in special way in their technical or professional environment. When you communicate with them, try to use the words in the same way they use them. 3. Different social groups have also developed their own vocabulary using common words to do something different. So you should care about the social context of whom you communicate with. 4. Most of us employ smaller vocabulary in speaking and writing that is actually understood. So you shouldn’t use uncommon words or uncommon meanings for certain words. In general, effective communication involves actions, reactions, and interactions. All these depend on the flow of information, questions and answers passing to and from the participants and all the while there must be understanding. One of the most frequent causes of misunderstanding is that related to the meanings of words.