So went the saying I was taught somewhere along the road of my education. The subject was English, and the point was that context -- the words surrounding the word in question -- defines a word. You can't know what a word means unless you know how it is used in the sentence or paragraph. Context.
Words have context, but there are other forms of context, as well: social, religious, and more. Virtually every field of study has its own context.
One area where context is often overlooked is the Bible.