[Steven Zahm]

@ boerup

Oh, posted too quick…

Yes, this is a little confusing… but it is the same terminology issue WordPress has too… In a post you can add Custom Fields. A dev could extend the post with a custom field.

See for yourself… go add a new post, there is a custom fields metabox. Plugins that extend the post with custom fields, but they are not related to the Custom Fields metabox other than the actual data gets saved to the same place in the database.

Hopefully that did not confuse you more!