köken: From вода́ (vodá) + -о- (-o-) + -ём (-jóm), combining form of имать (imatʹ, “to take, originally to have”) (compare 1sg. present е́млю (jémlju)).
basin (a depression, natural or artificial, containing water) · basin (an area of land from which water drains into a common outlet) · reservoir (a large natural or artificial lake used as a source of water supply)
a closed body of water, e.g. a lagoon · reservoir (natural or artificial lake used as a source of water supply) · glacial basin (a broad and relatively shallow depression caused by glaciation)
çekim: çoğul altaat · tamlayan altaan
köken: From Proto-Finnic *aldas (compare Karelian allaš (“trough”)), derived from a root borrowed from Proto-Germanic *aldǭ (“trough”) (whence e.g. Norwegian olda and separately also aalto). The ending has probably been modified to -as by analogy with other Germanic loans (such as valas).