First class and Wonderworking

First class noun - Mail that includes letters and postcards and packages sealed against inspection.

Wonderworking and first class are semantically related. In some cases you can use "Wonderworking" instead an adjective phrase "First class".

Wonderworking adjective - Performing or able to perform wonders or miracles.

First class and wonderworking are semantically related. Sometimes you can use "First class" instead an adjective "Wonderworking".