Compiler is a program that uses a high level language to a language translator which will translate all the program has to be done before then, it will follow the instruction by word order.
Compiler is a program used to translate high-level language into machine language. The program, which will translate to finish first. Then, follow the instructions at the command.
Compiler is an application that uses a high translation into machine language. Which will translate the whole program to finish first. Then it will follow orders by order.