Machine learning is a subfield of artificial intelligence that focuses on algorithms that learn from data. It is used to develop models and algorithms that can make predictions or decisions based on data. Examples include facial recognition, fraud detection and self-driving cars.
Natural Language Processing (NLP) is a subfield of artificial intelligence that focuses on understanding and processing human language. It is used to analyze and interpret natural language text or speech and is used for tasks such as sentiment analysis, question answering and machine translation. An example of NLP is Amazon Alexa, which can understand and respond to voice commands.