Message Passing Interface (MPI) is a standard protocol for parallel computing that allows data transmission between different parallel processes. There are many synonyms for MPI, such as interprocess communication, distributed computing, parallel programming, and parallel computing framework. These terms are all closely related to MPI and describe the same basic concept of transmitting data between parallel computing processes. However, each synonym may have slightly different connotations or technical requirements, depending on the specific context. Regardless of the terminology used, the goal of MPI is to enable multiple processors to work together efficiently and effectively, resulting in faster and more powerful computing capabilities.