Regular sound correspondences between Hungarian and other Uralic languages a different fashion. (Again, with the help of the other Uralic languages, the analogous developments *mp *ŋk → Hungarian /b g/, Finnic /mp ŋk/ could be supported.) Two different regular correspondences can be found in Hungarian for Finnish and Estonian . The first is Hungarian : The second is Hungarian zero: These two correspondences represent two different original consonants. : is reconstructed as originating in Proto-Uralic *ś, while ∅ : is reconstructed as Proto-Uralic *s. Both correspondences can be seen simultaneously in the word for "autumn" (see above under *-k-), from Proto-Uralic *sükśi. Examples also include 'bit', 'to fear', 'cloud',
Uralic languages resembles Nostratic in including Uralic, Indo-European, and Altaic, but differs from it in excluding the South Caucasian languages, Dravidian, and Afroasiatic and including Chukotko-Kamchatkan, Nivkh, Ainu, and Eskimo–Aleut. It was propounded by Joseph Greenberg in 2000–2002. Similar ideas had earlier been expressed by Heinrich Koppelmann in 1933 and by Björn Collinder in 1965. The hypothesis that the Dravidian languages display similarities with the Uralic language group, suggesting a prolonged period of contact in the past, is popular amongst Dravidian linguists and has been supported by a number of scholars, including Robert Caldwell, Thomas Burrow, Kamil Zvelebil, and Mikhail Andronov. This