Bang-up and First class

Bang-up adjective - Of the very best kind.

First class and bang-up are semantically related In some cases you can use "First class" instead an adjective phrase "Bang-up".

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

Bang-up and first class are semantically related in highest quality topic. Sometimes you can use "Bang-up" instead an adjective phrase "First class".