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.
In any hierarchical network, designers must specify how the access layer delivers traffic to the core. In Mobile Network Operator (MNO) networks, the transport of voice and data from the cell sites to the wireless MNOs' core networks is called backhaul.