[ajuc]

Yup, noone uses "tank" unless trying to sound Russian (and most people know it's Russian for czołg because of this movie https://en.wikipedia.org/wiki/Czterej_pancerni_i_pies).

Also in multiplayer games tank is used for the fighter class that is supposed to absorb the damage, and the verb is "tankować", but it's not associated with czołg in most people minds (at least not in mine), it's just another English word from games, like pwn or imba.