Here are some synonyms for ferocity:
* Savagery
* Brutality
* Violence
* Aggression
* Wildness
* Fury
* Intensity
Here are some examples of how "ferocity" can be used:
* "The lion attacked its prey with incredible ferocity."
* "The storm's ferocity tore through the town, leaving a trail of destruction in its wake."
* "The team fought with a ferocity that surprised their opponents."
It's important to note that "ferocity" doesn't necessarily have to be about physical violence. It can also describe an intense emotional state, such as a fierce determination or a passionate pursuit of a goal.