Concurrency, Parallelism, Concurrent Programming, Parallel Programming, Multithreading.
http://micro-os-plus.github.io/user-manual/threads/ https://people.cs.rutgers.edu/~pxk/416/notes/05-threads.html https://www.researchgate.net/figure/Three-types-of-thread-models-Popular-operating-systems-5-22-24-adopt-the_fig1_346379550