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mainframe vs. supercomputer

mainframe
[meyn-freym] / ˈmeɪnˌfreɪm /

noun

Computers.
mainframes plural

  1. a large computer, often the hub of a system serving many users.

supercomputer
[soo-per-kuhm-pyoo-ter, soo-per-kuhm-pyoo-ter] / ˈsu pər kəmˌpju tər, ˌsu pər kəmˈpju tər /

noun

  1. a very fast, powerful mainframe computer, used in advanced military and scientific applications.