There are many tasks in our day to day life which we repeat at specific intervals, like eating meals, taking a bath, going to school etc.
There is a very similar concept to this in programming where we need to repeat certain lines of code at specific interval or till specified condition is met.
In programming, repetition of a line or a block of code is also known as iteration. A loop is an algorithm which executes a block of code multiple times till the time a specified condition is met. Therefore, we can say that a loop iterates a block of code multiple times till the time mentioned condition is satisfied.