EN
The author argues the significance of interdisciplinary research and co-operation among the different scientific branches when creating a complex image of scientific research. The author finds the common points with history, ethnology, dialectology, and folkloristics by means of the various examples of onomastic research done in Slovakia. The research results of the aforementioned sciences are a part of the broad pan-Slavonic research and they have become an important part of Slovak slavistics, too.