How to remove each item that appears in first collection from second collection using linq?

Question

Suppose I have 2 collections:

1) {1, 2, 3, 5}
2) {2, 5}

I want to remove each item that appears in second collection from first collection, so I will get:

{1, 3}

Questions:

1. How can I do this with Join OP (better with extension methods syntax)?
2. And is there any way I can iterate over two collections as I do with nested for/foreach loops?

Edits:
To iterate over two collections simultaneously You can use nested from clauses:

from boy in boys
from girl in girls
select boy + "+" + girl

First time I found this syntax necessary :)

Answer 1

This does what you need

var solution = list1.Except(list2);

You can find more details about Except here, but the basic idea is:

This method returns those elements in first that do not appear in second. It does not also return those elements in second that do not appear in first.

Answer 2

Easy. Use Except

var newList = list1.Except(list2).ToList();