köken: From Middle High German aspe, from Old High German aspa, from Proto-West Germanic *aspu. The modern vocalism is from Middle Low German espe, in which it is generalized from derivatives with umlaut. Cognate with Dutch esp.
köken: Controversial origin: * From Bulgar (Oghur Turkic) *nyār, from Proto-Turkic *yāŕ (“spring, summer”). Compare Chuvash ҫур (śur, “spring”), and (from common-Turkic *jāz) Yakut саас (saas, “spring”), Tuvan час (ças, “spring”), Kazakh жаз (jaz, “summer”), Old Turkic 𐰕𐰖 (y¹z, “summer”), Turkish yaz (“summer”). * From nyár (“marsh”, obsolete in this sense).
aspen, apse (tree of genus Populus, usually European aspen)
çekim: çoğul трепетли́ки
köken: From an l-derivative of Bulgarian тре́пет (trépet, “trembling”) (cf. Bulgarian трепетли́в (trepetlív, “quivering”)) + -ика (-ika). Cognate with Slovene trepetlika.
köken: From Proto-Baltic *apse, from Proto-Indo-European *apsā, from *(H)osp-, already the name of the same tree. Cognates include Lithuanian ẽpušė, dialectal ãpušė, apušė̃, Old Prussian abse, Proto-Slavic *opsa (Russian оси́на (osína), Ukrainian оси́на (osýna), Belarusian асі́на (asína), all from earlier *o(p)sina, Bulgarian оси́ка (osíka), Czech dialectal and Polish osa, osina), Old High German aspa,…