Here's why:
* Spoken vs. Written Language: Speeches are designed to be spoken, relying on vocal tone, pacing, and gestures to convey meaning. Essays are written, relying on carefully chosen words and structure.
* Audience Interaction: Speeches often involve direct interaction with the audience, allowing for immediate feedback and adaptation. Essays are a one-way communication, with no opportunity for immediate dialogue.
* Emotion and Impact: Speeches can utilize emotion and passion to create a stronger impact on the audience. While essays can convey emotion, it's often done through descriptive language rather than vocal inflection.
While the content of a speech and an essay can be similar, the way they are presented is vastly different. The emphasis on delivery allows a speaker to connect with their audience on a deeper level, using nonverbal cues to enhance their message.