Proto-Slavic *volga

→ Bulgarian влага (inherited)

→ Old Church Slavonic влага (inherited)

→ German Wolke (cognate)

→ Latvian valgs (cognate)

→ Macedonian влага (inherited)

→ Russian влага (derived)

→ Russian волога (inherited)

→ Russian волога (inherited(ru/uk))

→ Serbo-Croatian vlaga (inherited)

→ Serbo-Croatian влага (inherited)

→ Slovak vlaha (inherited)

→ Albanian vlagë (derived)