General:
* Deepening: This is the most common and direct noun form of "deepen." It refers to the act or process of making something deeper.
* Example: "The deepening of the riverbed caused flooding."
Specific:
* Depth: This refers to the quality or state of being deep.
* Example: "The depth of the ocean is impressive."
* Intensification: This refers to the act of increasing the intensity or severity of something.
* Example: "The intensification of the storm led to evacuations."
To choose the right noun, consider the specific meaning you want to convey.