You would need to introduce a list.
For example you could have: My shopping list contains of; milk, bread, and yogurt.
Another purpose is to separate clauses.
Answer: number 1 is 3, number 2 is 2, and number 3 is 1
Explanation:
Answer:
What is this question about?
Explanation:
I don't get it.
Answer:
In an expository paragraph, you give information. You explain a subject, give directions, or show how something happens
Explanation: