Answer :

The study of the origin of words and how their meanings have changed throughout history

Answer:    Origin and words development

Explanation:  Etymology is a science that studies the origin of the words. Also, etymology contributes to a better understanding of words that are no longer in use, that is, studies the development and change in the meaning of words throughout history. In a word, it connects the original meaning of the words, its origin in a particular language, its changes, and its wider meaning in other languages. For example, the word etymology itself comes from the Greek word etumos, which means the truth.