Nouns

(n)parlance, idioma manner of speaking that is natural to native speakers of a language
(n)dialect, idiom, accentthe usage or vocabulary that is characteristic of a specific group of people“the immigrants spoke an odd dialect of English”, “he has a strong German accent”, “it has been said that a language is a dialect with an army and navy”
(n)artistic style, idiomthe style of a particular artist or school or movement“an imaginative orchestral idiom”
(n)idiom, idiomatic expression, phrasal idiom, set phrase, phrasean expression whose meanings cannot be inferred from the meanings of the words that make it up