What's the difference between an ancestor/parent and a descendant/child?

Question

HTML

Greetings
There are four concepts/elements:

1. Ancestor
   
2. Descendant
   
3. Parent element (parent)
   
4. child element
   

Can you explain the difference between them?

Answer 1

Parent and child elements are immediate ancestors and children, while ancestors and children can be related by intermediate parents.