Can you explain the word germ?

Please excuse me going mental about this. I looked up the definition of a germ. One definition was basically saying a germ, fungi, virus and some others. What? A germ is a virus? Many products claim to kill germs but the same product is not able to claim it kills mold or a virus. OK, so now I’m confused and cannot find a definition that satisfies me or a least opens my mind to understand something that I thought I understood, but maybe don’t. Another definition I saw said there are 4 major types of germs – Bacteria, viruses, fungi, and protozoa. Another definition from Merriam Webster defines a germ as a mass of living substance capable of developing into and organism or one of its parts? Well I thought it was already one of the 4 listed above. Anybody else not satisfied with these answers? Read more