оккупант

Noun

 * 1) occupier, occupant, invader
 * 2)  an animal that steals and lives in the nest of another animal.
 * 3)  a Russian soldier who takes part in the 2022 Russian invasion of Ukraine
 * 1)  a Russian soldier who takes part in the 2022 Russian invasion of Ukraine

Coordinate terms
(for sense 3)