As human beings, we live in a state of perpetual change. Technology advances, we get older, and we find ourselves in new jobs, new situations, and new social spheres. Part of learning to adapt to these changes is being able to communicate on a variety of topics, with a wide range of people. Without this ability, we will not be comfortable in our new situations.
A large part of this discomfort is due to a of lack of vocabulary. If you don't understand the vocabulary others are using, you won't be able to pick things up quickly and integrate yourself into the group. This is especially important when you're starting a new job, for example. You'll need to be up on all of the field-specific jargon if you want to make a good start, and not burden other people with having to train you and explain every detail. When you
build your vocabulary, it enables you to participate with confidence under any circumstances. While many people turn to reference materials and textbooks to improve vocabulary, there are other stress free ways you can build your vocabulary.
Watching Movies
Hollywood, Bollywood, and all the other international movie makers have been major contributors to modern society throughout the world for the last couple of decades. Moves provide a great deal of entertainment, but they can also be educational. For example, documentaries are usually focused on one particular topic, and watching such movies will act as a power vocabulary builder, if you're willing to focus on the words used and make note of them. Subtitles are now being provided with many movies, which makes it easier to understand some words that you may not be accustomed to. It's easier to figure out the meaning of words when the scene defines it all.
Following News Channels
The media also provide us the information we want, either in general news or information depending on our interests. There is hardly any area that the media do not cover, especially when you include blogs and other social media. "Following the news" doesn't necessarily mean that you have to get involved in politics (unless you want to, of course). You should certainly watch the news related to your interest, however. This will definitely help in increasing your vocabulary as the standards of English language used in broadcast media are generally better than the normal conversation used in public..
Learning through the internet
People who are fond of surfing the internet don't need to worry at all regarding their vocabulary. There's a great number of user friendly software systems developed and available online. There are often highly-regarded software for building vocabulary based on scientifically-proven methods.
It's very important to enhance your vocabulary skills, not the least because it will boost your confidence and help you succeed.