In linguistics, a morpheme is the smallest grammatical unit in a language. In other words, it is the smallest meaningful unit of a language. The field of study dedicated to morphemes is called morphology. A morpheme is not identical to a word, and the principal difference between the two is that a morpheme may or may not stand alone, whereas a word, by definition, is freestanding. When it stands by itself, it is considered a root because it has a meaning of its own (e.g. the morpheme cat) and when it depends on another morpheme to express an idea, it is an affix because it has a grammatical function (e.g. the –s in cats to indicate that it is plural). Every word comprises one or more morphemes. The more combinations a morpheme is found in, the more productive it is said to be.
Every morpheme can be classified as either free or bound. These categories are mutually exclusive, and as such, a given morpheme will belong to exactly one of them.
We looked out towards the target and saw a vast ball of
fire. After 15 seconds the flame had died out, and turned
into a cloud. Exactly what that cloud looked like I do
not suppose any words will ever describe. Unlike any
other phenomenon the world has ever seen it was possessed
by some diabolical activity. And so it were a horrible