Machine learning is the science of getting computers to act without being explicitly programmed. According to John McCarthy, it is The science and engineering of making intelligent machines, especially intelligent computer programs

Natural Language Processing (NLP) draws from many disciplines, including computer science and computational linguistics, in its pursuit to fill the gap between human communication and computer understanding

Data science is a multidisciplinary blend of data inference, algorithm development, and technology in order to solve analytically complex problems. Data science is ultimately about using this data in creative ways to generate business value

A programming algorithm is a computer procedure that is a lot like a recipe and tells your computer precisely what steps to take to solv e aproblem. Once we have an algorithm, we can translate it into a computer program in some programming language