Concurrency, Parallelism, Concurrent Programming, Parallel Programming, Multithreading.
https://subscription.packtpub.com/book/programming/9781788627900/1/ch01lvl1sec12/the-shared-memory-and-shared-state-model https://learn.microsoft.com/en-us/dotnet/standard/threading/managed-threading-basics?redirectedfrom=MSDN