Battlecarrier
A battlecarrier is a large, often hypothetical, hybrid naval ship designed to combine aspects of both an aircraft carrier and either a battleship or battlecruiser. This term is primarily used to refer to the following:

the American , nine completed as light aircraft carriers
the American 
the Soviet 
the Japanese s after their conversion to hybrid carriers
various plans to modernize the American s into aircraft carriers, such as the Interdiction Assault Ship
a plan to finish the building of Jean-Bart battleship in USA as a battlecarrier.

Since the early 1930s many plans and projects to make a battlecarrier was made, such a project which was close to being built was a project made by the United States and the Soviet Union, but was cancelled. Battlecarriers, theoretically, would perform poorly in battle if they were created. Their hangar and flight deck is inviting for enemy attacks and due to the same hangar, less armament can be carried, and vice versa.

Citations

References 
 Hoppe, Jon.  The Iowa-Class Battlecarrier: A Design that Never "Took Off." Naval History Magazine, June 2022.
 Purssell, Robert.  Battlecarrier: Why the Navy Converted a Battlecruiser Into an Aircraft Carrier. The National Interest. February 28, 2021.

See also
Aircraft cruiser
Helicopter destroyer

Nautical terminology
Ship types
Battleships
Aircraft carriers by type