Emeritum vs. Emeritus — What's the Difference?

A bounty awarded to a soldier upon the completion of his term of service.

Emeritus (; female: Emerita), in its current usage, is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title the rank of the last office held".In some cases, the term is conferred automatically upon all persons who retire at a given rank, but in others, it remains a mark of distinguished service, awarded only to a few on retirement. It is also used when a person of distinction in a profession retires or hands over the position, enabling their former rank to be retained in their title, e.g., "professor emeritus".

Retired but retaining an honorary title corresponding to that held immediately before retirement

One who is retired but retains an honorary title corresponding to that held immediately before retirement.

(postpositive) Retired, but retaining an honorific version of a previous title.

A person retired in this sense.

Honorably discharged from the performance of public duty on account of age, infirmity, or long and faithful services; - said of an officer of a college or pastor of a church.

A veteran who has honorably completed his service.

Honorably retired from assigned duties and retaining your title along with the additional title `emeritus' as in `professor emeritus'; `retired from assigned duties' need not imply that one is inactive