General:
* Emotion: This is the most common and general term.
* Expression: This is a broader term that can encompass both verbal and nonverbal communication.
* Feeling: This focuses on the internal state of the person emoting.
Specific:
* Facial expression: For emoting with the face.
* Gesture: For emoting with body language.
* Vocalization: For emoting through sound.
Informal:
* Emote: You can use the verb "emote" as a noun in informal contexts.
* Emotionality: This refers to the quality of being emotional.
The best choice depends on the specific situation and the nuance you want to convey.