Many scientific and technical words are based on Latin and Greek words - television is simply vision, with the Greek word tele, meaning far. New words often come from foreign languages. In the early 1600s, English gained many new words as explorers ventured overseas. In 1977, the French were so worried about how many English words were being used in France that the government banned them from official documents. Every language has its own set of rules or grammar about the way words are used and in what order.
Language is broken into sentences or phrases.
It may also have an object, the thing affected. In Welsh and others, the verb comes first. In English, too, the order may be changed to create a particular effect. The beautiful Book of Kells was made by Irish monks in the 8th century. Like most books of the time it is in Latin.