The term 'mechanical helper' can be summarized as a ROBOT, which is a five-letter word. A ROBOT is an artificial intelligence machine that is programmed to perform certain tasks autonomously or with minimal human input. Robots are used in many industries, such as manufacturing, healthcare, and transportation, to help automate processes and reduce the need for manual labor. They can also be used to assist humans in performing complex tasks, such as surgery or hazardous work.