Invention, often linked to discovery, refers to the creation of a new device, method, or process that did not previously exist. It involves applying knowledge and creativity to solve problems or improve existing solutions. Famous examples include the light bulb by Thomas Edison and the telephone by Alexander Graham Bell, which transformed communication and daily life. Discovery, on the other hand, is the act of finding something that already exists but was previously unknown. This can include scientific discoveries like penicillin by Alexander Fleming or the structure of DNA by James Watson and Francis Crick. Both invention and discovery play crucial roles in advancing technology and knowledge.