SiliconeSilicones are certain chemical compounds which consist of polymers made up of silicon-oxygen and silicon-carbon bonds. They can vary in consistency from slimy goo to hard rubber. Most famously, silicone was and still is used as a filler in breast augmentation implants. Silicone is also used in the toy Silly Putty.
Silicone is often mistaken colloquially for elemental silicon, because of the similarity in pronunciation, but they are entirely different. For example, in the Shakira song "Objection (Tango)", the lyrics "next to her cheap silicon I look minimal" should be "next to her cheap silicone I look minimal."