What are the similarities between caspase and procaspase?

There are multiple similarities between caspase and procaspase. Both caspase and procaspase are two types of proteases, and are also proteins composed of amino acids. The two also both have similarities in their structure as procaspases are just the inactive form of caspases. They are both also found in humans and other mammals such as mice. Caspase and procaspase are both essential for cellular functions.