There are a number of words that can be used as synonyms for the term "spark counter". One possible option is "ignition counter", which is often used in the automotive industry to refer to a device that counts the number of times a spark plug fires. Other options include "spark counter coil", which is a type of electronic component that measures the frequency of spark discharges, and "spark tester", which is a tool used to determine whether a spark ignition system is functioning properly. No matter which term is used, the idea behind a spark counter is to measure or track the performance of a spark ignition system in order to ensure that it is working as intended.