| This article is part of the grammar course.
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Words are the units of language that native speakers recognise as units. A word is the smallest unit of meaning that can stand by itself and make sense, even if that sense is only limited. Another way of looking at it is that a word is the unit shown in writing by being between two spaces, or a space and a punctuation mark.
There are many different kinds of words: the section of the AWE's grammar course on word classes describes them.