Kalmar "Onega" na iya samun ma'anoni daban-daban dangane da mahallin, amma galibi, tana nufin wani babban tafki a yankin arewa maso yammacin kasar Rasha mai suna tafkin Onega.Lake Onega shine na biyu. -tafi mafi girma a Turai kuma ya mamaye fili fiye da murabba'in mil 3,700 (kilomita murabba'in 9,700). Yana cikin Jamhuriyar Karelia da yankin Leningrad na Rasha kuma ana ciyar da shi daga koguna da koguna sama da 50.Bugu da ƙari ga tafkin, "Onega" kuma yana iya komawa zuwa kogin Onega, wanda ke ciyar da shi. yana kwarara daga tafkin Onega kuma ya fantsama cikin Tekun Fari. Onega na iya zama sunan mahaifi ko sunan wuri a Rasha.