from Vladimir Georgiev ,Bulgarian linguist
Slavic elements in ancient Trachian language.
Thracian word for rabbit is SAIHA.
In Slavic it is Zaek, Zajka, Zajac, Zajakot, Zajak, Zec etc
Berga, Bryg, Helm, Hum are Slavic names for hill - Brig/breg
toponims; Bergana, Bersama, Bersovia, family names Bregovic, Brigic etc.
Berza or Breza is Birch tree
toponims; Bersava, Bersamae, Bersovia ,old Bulgarian and old Serbian Briza.
Bourd or Brod is Boat
toponims; Burdara, Burdomes, Slavonski Brod, Bosanski Brod etc
