In a nutshell and Undersized

In a nutshell adverb - Summed up briefly.

Undersized and in a nutshell are semantically related. in abridged topic. In some cases you can use "Undersized" instead an adjective phrase "In a nutshell".

Undersized adjective - Of a size that is less than average.

In a nutshell and undersized are semantically related. Sometimes you can use "In a nutshell" instead an adjective "Undersized".