Who is a Semite ?

do you know

what exactly is a semite or a hamite

The name Semite comes from Shem, the eldest of the three sons of Noah . In the Greek and Latin versions of the Bible, Shem becomes Sem, since neither Greek nor Latin has any way of representing the initial sound of the Hebrew name.

The Bible tells us that everyone on earth was drowned except for Noah and his family and that all mankind are descended from his three sons, Shem, Ham, and Japheth. The lines of descent from the three of them, described in the tenth chapter of Genesis, represent a kind of mythologized ethnology, enumerating the peoples of antiquity whose names were known at the time when this chapter was written, and setting forth the relationships between them.

so according to the bible. the human race is descended from 3 people?

In later times the idea was widely adopted by Christians, and to a lesser extent by Muslims and Jews, that the three sons of Noah represented the eponymous ancestors of three major racial or linguistic groups. According to this interpretation, Ham was the  ancestor of the dark‑skinned peoples of Africa, Shem of the Hebrews and their various cognates, and Japheth the ancestor of the Medes, Persians, Greeks, and other peoples who, many centuries later, came to be known as Aryans.