Hear and Listen. Different?

Hear and listen. What is your opinion about these two words? Are these two words are different? Looking this word for the first time may be we think these two words got the same meaning. For the reality, these two words have the differences meaning. Hear means you only get some sound to your ears. You know what the sound is. Listen is different. Listen is you hear something and you think about it. Your attentions analyze the meaning about the sound. When you listen, you will understand and feel the sound that you hear. Think about it.