Ellipsis/Ellipsis Points …
The ellipsis, a series of three dots, shows that something has been removed from a sentence. It can also show a pause or an unfinished sentence.

Examples
The report indicates that we can expect sales of 45 million units next year if conditions … remain favorable.
I really don’t know what I’m going to do …
The Albanian Declaration of Independence states: “The chairman, Ismail Kemal Bey …. stated that although they had always been faithful to the Ottoman Empire, the Albanians had never forgotten their own language and nationality …”

Comma ,
The comma joins two or more ideas in a sentence or separates items in a series.

Examples
We’ve hired all our interns, and we’re ready to start working on the project.
The largest economies in Southeast Asia are those of Indonesia, Thailand, and the Philippines.
He likes lychee, but he does not like durian.