The goal of the article is the reconstruction of a fragment of the Pomeranian lexicon on the basis of German recording of terrain names of Slavic etymology. Presented here are terrain names created from the words brzoza (birch) (Pomeranian breza||broza), buk (beech) and dab (oak), as well as from the word dabrowa 'a forest primarily of oaks' that is, from three popular names of deciduous trees. A list of the original inscriptions and their interpretation is supplemented by two maps, on which the distribution of the names under discussion in Western Pomerania is indicated. Terrain names of Pomeranian (Slavic) origin are markedly more numerous in the eastern part of the region, which from a linguistic viewpoint neighbours on Kashubian dialects. This fact is connected with the significantly earlier Germanization of the western part of Pomerania (15th-16th centuries) and the later (comparatively: 17th-18th-19th centuries) Germanization of the eastern part. We find place names based on breza||broza, buk, dab i dabrowa in Western Pomerania significantly less often than terrain names.