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.
Backchannel (linguistics) In linguistics, backchannels are listener responses in a primarily one-way communication. These can be both verbal and non-verbal in nature, and are frequently phatic expressions, primarily serving a social or meta-conversational purpose, rather than involving substantial two-way communication.