To further elaborate, AI is "intelligent machines" and includes the capability of machines that imitate intelligent human behavior, such as Google Assistant and it also includes computers that carry out tasks that traditionally require human intelligence, such as visual perception, language translation and recognition, including speech recognition and decision making. Examples of the latter definition include: Google Lens, Google Photos, Google Translate, Google Assistant, Google's Duplex, the predictive aspects of the Pixel Launcher, and a whole host of other things. It also includes Google Search, especially the knowledge graphs.
Machine Learning is programs that alter themselves, giving themselves the ability to improve themselves without requiring a human to do additionally programming. Machine learning has to do with optimization across as specific aspect of their algorithmic activities. The computer is programmed with a set of rules to traverse a set of algorithms and is able to minimize it's own inefficiency by making alterations to those very same algorithms.
Deep Learning is a subset of ML that use "deep artificial neural networks" which are being programmed to function in similar ways as our own neural networks, including hardware required to do more computations per second. The "deep" part refers to the number of layers in a neural network. The more layers to the network, the more synapses are able to be formed, similar to our own brains and the easier and faster it becomes to do a higher volume of work and more difficult work. As an example, the DeepMind program from Google known as AlphaGo, a computer was able to defeat a world champion Go player. The craziest aspect of that activity was that AlphaGo was able to accomplish that without any human intervention. It was provided with the rules of the game and it learned by playing against itself until it was ready to take on human minds. This is an example of ML and AI combined in the form of DL.
None of these have anything to do with sentience or consciousness.