Software: Software refers to any collection of programs, data, or instructions used by a computer system. It includes both applications and system software.
Algorithm: An algorithm is a step-by-step procedure or formula used to solve problems or perform calculations. It is like following a specific set of rules to achieve an outcome.
Applications: Applications, also known as apps, are software programs designed for specific purposes such as word processing, gaming, or photo editing. They are examples of programs created for end-users to accomplish various tasks.