The main diffference is that a virus is not a living organism and cannot reproduce on it's own, requiring host cellular machinery to reproduce, whereas a bacterium is a single-celled organism which is capable of reproducing on its own. Another notable difference is size: A virus is very small, being less than 0.25 micron, compared to bacterium, which range from 0.4 micron up to 1 cm in size.
spam lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor creativity violence