"Mono" is a term that can refer to several things, but one common meaning is short for mononucleosis, a viral infection often caused by the Epstein-Barr virus. It is sometimes called the "kissing disease" because it spreads through saliva. Symptoms include fatigue, sore throat, fever, and swollen lymph nodes. Most people recover fully, but it can take several weeks to feel normal again. In a different context, "mono" can also refer to monochrome art, which uses only one color or shades of a single color. This style emphasizes form and texture, allowing viewers to focus on the subject without the distraction of multiple colors. Monochrome art can be striking and powerful, showcasing the beauty of simplicity.