Identification, collecting and studying on the local dialects, cause not only consolidation of cultural relation between today and yesterday, but also prevent destruction of dialects and provide a condition for improving and developing of national language and culture. Eshtehardi Tatty dialect, the dialect of the south-west Iran, with all that antiquity, is still alive and regarding its geographic region, had been remained intact until a few decades ago. But now for various reasons is eliminated against the power of national language. The presence of some elements of relation with the ancient language in this dialect, the maintenance of relation with the ancient languages of Iran and also the extent of lexical scope and diversity of grammatical structures are the main features of this dialect. In this article, according to a phonetic comparison between the common words of this dialect with Persian language, we have tried to present a clear picture of its phonetic features. Such a work has not been done so far and it can be very useful in understanding the nature of Tatty dialect and in discovering the relation and interaction of this dialect with the dialects in the same root. Our study shows that the phonetic distinctions of Tatty dialect with the Persian language appears in the first, middle and final part of words, and follows four phonological transformation, deletion, addition and metathesis.

Geographical names are relatively pertinent components in introducing the historical background of places. In other words, despite the fact that should there be any variation in the culture and language pertinent to a region, geographical names rarely undergo any alteration. For this very reason in some cases, it is observed that there is less consistency between geographical names pertinent to a region and the spoken language of that region. Among such cases, one can find the region of Azerbaijan as an example. The Turkish language is the established language of Azerbaijan, with mostly non-Turkish place names. Therefore, this study seeks to understand the possible relation between URUNYMS in Khalkhal township as a part of Azerbaijan region and the Turkish language spoken in this region. The research method in this study is descriptive-analytical and data collection instruments are based on library resources. This study shows that despite major transformations from Azeri (Tatty) into Turkish in Khalkhal Township, the mountain names have not undergone notable changes and have preserved their original ancient forms. They are geographical words, with suffixes and prefixes, often seen in most other places in Iran. Also, most place names have a spatial distribution in other regions in Iran. Meanwhile, it appears that places names are non-Turkish, and if there has been any changes, it has been a mixture of ancient Azeri and Turkish names.