I am working on timing in a game loop, which lead me to researching how a CPU works. From my research, I got confused on what the two different terms mean. From what I understand, a clock tick is one full revolution of a cycle, fetch -> decode -> execute. The impression that I got was that a clock tick and clock cycle are the same, but according to this post on stackoverflow they are not.

So the sole purpose of a clock tick is to measure the system time, while clock cycle is to measure the speed of the cpu, which is measured in (hertz), the number of times a cpu makes a full revolution. Is that correct? Some clarification would be nice. Thanks