Canal derives from the Latin "canālis" which means tube or groove, but at the same time it comes from the Latin word "canna" which means reed. The term channel has several meanings, which could vary depending on the context or area where it is used. Generally the word is used to describe any water conduit by those that can be navigated or moved by sea, but also make it possible to redirect the path of water to other natural areas such as the river or the sea.
These types of channels are created by man, thanks to a set of hydrological and engineering processes; in other words, they are artificial. Around the world there are different types of canals and it should be noted that these navigation canals were built since ancient times, an example of this was Egypt and China that had canal networks, for their part the Romans were also great canal builders. Then, until around the 8th century, inactivity in terms of canal constructions became present.
Among the best known canals around the world are the Panama Canal, which was inaugurated in 1914, is a widely used navigation route that crosses the isthmus of Panama, and is located between the Pacific Ocean and the Caribbean Sea. Another is the Suez Canal, built from 1866, located in Egypt that links the Red Sea with the Mediterranean Sea. Finally there is the Kiel Canal, also known as the Kaiser-Wilhelm Canal (Kaiser-Wilhelm-Kanal) until 1948, which covers about 98 km in length, connecting the North Sea at Brunsbüttel with the Baltic Sea, at Kiel-Holtenau.
On the other hand , a channel is understood to be that conduit or pathway of the body, which is almost always thin and hollow.
A channel is also a means or route used to transmit a message, which can be oral or written.
And finally, a frequency band through which television and radio waves are emitted is also called a channel.
