Final answer:
The main difference is that verbal communication uses speech and nonverbal cues, while written communication relies solely on written words and textual elements.
Step-by-step explanation:
The main difference between verbal communication and written communication is that verbal communication relies on speech and often includes nonverbal cues such as body language and facial expressions, whereas written communication is based on the written word and is devoid of physical gestures. Verbal communication can also include vocal techniques like tone, pitch, speed, and pauses, which play a crucial role in conveying meaning and enhancing understanding. On the other hand, written communication relies on textual elements like word choice, grammar, structure, and visual aids, such as images and typography, to convey its message and engage the reader.