A program that executes instructions written in a programming or scripting language without requiring them to have been compiled into a machine language program.

"Interpreters parse and execute code line by line, which allows for interactive coding and debugging but can be slower than running compiled code."

A computer program that directly executes instructions written in a programming or scripting language.

"Unlike a compiler, an interpreter executes code line by line, which can be useful for scripting and rapid application development."