What is the diiference between statues and stained glass windows?

I have seen many times on here that the catholics are accused of worshipping false idols because they have statues and pictures of Jesus, Mary and saints in their churches.

I just asked the question “Do protestant churches have stained glass windows? What do they depict?”

http://answers.yahoo.com/question/index;…

Most of the answers were yes, they depict saints, biblical scenes etc.

Can someone explain to me what the is difference please?