1. etymology new stone age 2. sedentary middle stone age 3. paleolithic the process of settling down in one location 4. mesolithic old stone age 5. neolithic the study of the origins of words

1. Etymology : the study of the origins of words .

2. Sedentary: The process of settling down in one location.  

3. Paleolithic : Old Stone Age.  

4. Mesolithic : Middle Stone Age.

5. Neolithic: New Stone Age

Explanation:

1. Etymology studies the history of words through the examination of texts and works about the language, in order to collect information about the way words were employed in the past and at what point they entered the language. Methods of comparative linguistics can also be applied to reconstruct knowledge of languages that are old and have no direct information available.

2. Sedentarism is the practice of living in one place for a long time and is the way most of the people live at the present.  

3. The Paleolithic was the Old Stone Age (1,000-12,000 b.c.)

when humans were nomadic.

4. The Mesolithic was the middle period in the development of humans between the Paleolithic and Neolithic periods (12,000-8,000 b.c.)

5. The Neolithic was the latest period of the Stone Age (8,000-5,000b.c.) when sedentarism developed.

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