What's the difference between interpreter and compiler​?

Answer 1

an interpreter can translate only one line of code at a time but a compiler can translate a block of code at a time

Answer 2

Interpreter --
Compile one by one line (statement)
of a program.
If any statement found wrong, It won't compile and execute any further lines until you correct it.
-
Compiler --
Compile whole statements of a program and execute it.

Answer 3

interpreter will compile and runs the code
compiler just compiles the code
(process of converting programming language to machine code is called compilation)