Here's why:
* Direct Address: Speeches are designed to be delivered to a live audience, so speakers often use direct address (e.g., "Ladies and gentlemen," "My fellow Americans," "You all") to create a personal connection and engage the listeners. Written essays, aimed at a broader, potentially unseen audience, are less likely to use direct address.
* Other Considerations: While direct address is a key difference, other elements can also be more prominent in speeches, such as:
* Repetition for emphasis: Repetition of key phrases can be very effective in speeches.
* Emotional appeals: Speakers can use emotion to connect with their audience.
* Anecdotes and stories: Speeches often use personal stories to illustrate points.
Of course, there are exceptions, and some essays might use direct address, while some speeches might focus more on logical arguments and evidence. However, direct address is generally a much more common element in speeches.