For a large proportion of the 300 Thracian geographic names there are cognates within the Baltic toponymy, most similarities between Thracian and Balto-Slavic personal and geographic names were found, especially Baltic. According to Duridinov the "most important impression make the geographic cognates of Baltic and Thracian" "the similarity of these parallels stretching frequently on the main element and the suffix simultaneously, which makes a strong impression". According to him there are occasional similarities between Slavic and Thracian because Slavic is related to Baltic, while almost no lexical similarities within Thracian and Phrygian were found. This significant relatedness show close affinity and kinship of Thracian with Baltic.