Lesser and Scratcher

Lesser adjective - Having not so great importance or rank as another.

Scratcher and lesser are semantically related In some cases you can use "Scratcher" instead an adjective "Lesser".

Scratcher noun - A person who scratches to relieve an itch.

Lesser and scratcher are semantically related in petty topic. You can use "Lesser" instead an adjective "Scratcher", if it concerns topics such as trivial.