Whats the difference and simmilarities between a world war 1 nurse and a world war 1 Tommy?

well a nurse was a nurse and a Tommy was a Tommy

A Tommy was a British soldier. The origins of the nickname Tommy are a lost in the mists of time. Tommy Atkins was a term used for British soldiers as early as 1745 although in 1815 the name Tommy Atkins was used in a war office publication to show how a soldier's pay book should be filled out.

Nurse was not a nickname, unlike Tommy.