Followup and Postlude

Followup noun - A piece of work that exploits or builds on earlier work.

Postlude and followup are semantically related. in afterword topic. In some cases you can use "Postlude" instead a noun "Followup".

Postlude noun - A voluntary played at the end of a religious service.

Followup and postlude are semantically related. Sometimes you can replace term "Followup" with "Postlude", this nouns are similar.