* As a single letter: "A" is a letter of the alphabet, not a word.
* As a grammatical article: "A" is a definite article used before singular nouns, and therefore is considered a word. For example: "A cat sat on the mat."
* As a symbol: "A" can represent various things, like a grade, a point on a scale, or a variable in mathematics. In these cases, it's not a word but a symbol.
So, "A" can be considered a word depending on its context.