Compounds. There are more carbon compounds than there are compounds of all other elements combined. The study of carbon compounds, both natural and synthetic, is called organic chemistry. Plastics, foods, textiles, and many other common substances contain carbon.
backplane is the shared capacity between interfaces on a switch switch fabric is also the shared capacity between interfaces on a switch and can also be the shared capacity between interfaces on multiple switches using some sort of interconnect, typically vendor specific.
Backlink is a term that refers to links that point to a website or webpage from another website. This type of link also might be called an inlink or incoming link. Backlinks on other sites can increase a website's traffic. They also are tools used in search engine optimization (SEO), because the number and quality of backlinks that point to a website's often plays a role in the site's rank among search results.