▁survey ▁of ▁the ▁state ▁of ▁research ▁into ▁pale o - B alk an ▁languages ▁for ▁Cambridge ▁An cient ▁History , ▁cons iders ▁that ▁only ▁" 2 0 - 2 5 ▁Da cian , ▁and ▁ 4 0 - 4 5 ▁Th ra cian ▁words ▁have ▁had ▁reasonable , ▁but ▁not ▁certain , ▁Ind o - Europe an ▁et ym ologies ▁proposed ". ▁ ▁This ▁comp ares ▁with ▁c . ▁ 1 0 0 ▁Da cian ▁words ▁re construct ed ▁by ▁Dur idan ov , ▁and ▁c . ▁ 2 0 0 ▁Th ra cian ▁words ▁by ▁Georg iev . ▁ ▁Re construct ed ▁Da cian ▁words ▁▁ ▁{ | ▁class ▁= ▁w ik itable ▁| + ▁TABLE ▁B : ▁D AC I AN ▁W OR DS ▁RE CON STR U CT ED ▁FROM ▁AN CI ENT ▁NAME S ▁! ▁Re construct ed D aci an ▁word ▁!! ▁Mean ing ▁!! ▁Att est ation ▁!! ▁Possible ▁Ind o - Europe an root - word ( s ) ▁!! ▁An cient ▁cogn ates ( same ▁meaning ▁unless ▁stated ) ▁!! ▁Modern ▁cogn ates ( same ▁meaning ▁unless ▁stated ) ▁!! ▁ ▁C ogn ate p lac en ames ▁!! ▁Notes ▁| - ▁| * aba , ▁ap a ▁| water , ▁river ▁| R N ▁* Cal ab ae us , ▁river ▁in ▁S cy th ia ▁Minor R N ▁A pos ▁| * ab - ▁(" water ", ▁" river ") ▁It ▁derived ▁from ▁ak wa ▁( shift ▁kw > p , ▁g w