Obviously we know that the lexical base of the language is not sustainable during all periods of time. Therefore, the words concerning to any lexical group in a concrate period form an active layer in the vocabulary of the language for that period, in another period the shortening of the meaning, semanticization, or the existence and essence of the object, event, situation, action or concepts reflected by those words with its loss, it starts to become archaic and settles in the passive lexicon as archaism. Archaisms, which reflect the history of the people that go back thousands of years, are the most reliable and reliable sources of its history, language and ethnogenesis. Although archaisms leave the literary language, they do not absolutely disappear; they preserve their existence in any category in the passive vocabulary of the language, mostly in dialects. There are hundreds of words that form the category of common words in ancient Turkic, which are preserved in the dialects of modern Turkic languages, including the Azerbaijani language. In the article, archaisms of Turkish origin protected in dialects of the Azerbaijani language are investigated in a comparative way with ancient and medieval Turkish written monuments.