Important PointsCompilers, interpreters translate programs written in high-level languages into machine code that a computer understands. Assemblers translate programs written in low-level or assembly language into machine code. In the compilation process, there are several stages. Compilers, interpreters, and assemblers are language processors whereas a word processor is a computer program used to write and revise documents, compose the layout of the text, and preview on a computer monitor how the printed copy will appear.