Also and as well are two adverbs meaning basically the same. So, it is not the meaning in which they differ but their place in the sentence, for example. Also is usually used with the verb. As well usually goes to the end of the sentence or the clause. However, they can refer to different parts of a sentence or a clause depending on what is intended to express. Also can be placed at the beginning of the sentence. Also has more liberal sentence placement-for example, it can go to the beginning of the sentence-because it is the synonym of moreover or in addition. As well is used in the same way as too.
