Boisterous:
* Emphasis on energy and excitement: Boisterous describes something full of life, vigor, and exuberance. It suggests a lively and often chaotic atmosphere.
* Implies activity and movement: A boisterous crowd is likely to be moving around, shouting, and making a lot of noise.
* Can be positive or negative: Boisterousness can be seen as fun and playful, but it can also be disruptive and unruly.
Loud:
* Focuses on sound volume: Loud simply means that something makes a lot of noise. It doesn't necessarily imply excitement or activity.
* More objective: Loudness is a measurable quality, while boisterousness is more subjective.
* Often negative: Loudness is often seen as unpleasant or disturbing.
Examples:
* Boisterous: A boisterous party with loud music and lots of dancing.
* Loud: The loud traffic made it difficult to hear the conversation.
In summary: While both "boisterous" and "loud" describe something noisy, "boisterous" adds an element of excitement and energy, while "loud" simply refers to the volume of sound.