(geometry) disk (set of points whose distance from a specified point is less than or equal to a specified length)

(colloquial) grand, one thousand zloty

near, close to, next to, by / about

about, around, approximately [+no effect on case]

flywheel

(logic) vicious circle (fallacy in which the premise is used to prove a conclusion which is then used to prove the premise) / (idiomatic) vicious circle, vicious cycle

(idiomatic, mythology) wheel of Fortune / (idiomatic) unpredictable fate

(idiomatic) around (one's axis) / (idiomatic) around (the circumference of a circle) / (idiomatic) all around, in all directions / (idiomatic) all the time, constantly, incessantly

life belt, life buoy / lifesaver (something that is very useful or helpful)

(idiomatic) history repeats itself