Deep Learning Projects. Why is it called deep learning?

Why is it called deep learning? Deep learning is a type of machine learning that uses artificial neural networks with multiple layers to learn from large amounts of data. The term "deep" refers to the depth of the neural network, which means the number of layers it has. The term "deep learning" was coined in the mid-2000s to differentiate this type of neural network from the earlier shallow neural networks that were primarily used for simpler tasks such as pattern recognition. Where is deep learning used?