What is the difference between DNN and CNN?

What is the difference between DNN and CNN? DNN (Deep Neural Network) and CNN (Convolutional Neural Network) are both types of artificial neural networks used in machine learning and deep learning. Each neuron in a neural network becomes modeled as a mathematical function that takes in one or more inputs. A DNN is a type of neural network that becomes composed of many layers of artificial neurons that process input data. On the other hand, a CNN is a type of neural network that becomes specifically designed for image recognition tasks.