Answer:
1. childhood - the state or period of being a child.
2. doll -a small-scale figure of a human being used especially as a child's plaything
3. adulthood - the state or period of being fully grown, fully developed, or of age.
4. computer - a programmable usually electronic device that can store, retrieve, and process data using a computer to design 3-D models.
hope this will help u :)