Sentence:  And in addition, many <WSD>dialects</WSD> of English make no morphological distinction between Adjectives and Adverbs, and thus use Adjectives in contexts where the standard language requires "-ly" Adverbs 
Meaning of the word marked with <WSD> tags:  A variety of a language that is characteristic of a particular area, community(,) or social group, differing from other varieties of the same language in relatively minor ways as regards grammar, phonology, and lexicon.