Only words that say a lot, sometimes do not say anything, know how to combine those words well to leave in writing what you try to express, sometimes without meaning sometimes with reason. Just to say what you feel and express.

one Love
a smile
a desire
a virtue
a scorn
a look
a suffering
a constant
a pain
a caress
a clamor

Each and every one of them are some tangible expression, others not.
In written words, or pronounced words.

Words that say a lot, sometimes do not say anything.

In its different forms written or signs, spoken and even with signs are only words.

In many ways we have to use it, we always know how to express what we want to say, they are definitely a whole and for everything a chain of words is used, it can say only one thing, but it also happens that a single word means thousands of things.

The word is power.
The word is to know
The word is control