What is the difference between the meanings of "afterwards" and "then" [closed]

We can use "Then" at the beginning of a sentence. Meanwhile, we can put "Afterwards," at the start of a sentence. What is the difference between such two usages' meanings?

I am not sure does "Afterwards," stands for a longer pause compared to "Then". Or is "Afterwards" more formal?

Thanks in advance!

Solution 1:

Then simply means the next thing that happened was... They could be quite routine things.

"I got up, then had breakfast, then took the dog for a walk."

We would use afterwards to refer to something that happened after a significant action or event.

"I spent the afternoon working hard in my garden. Afterwards, I was too tired to do anything but relax in front of the TV."