Anything that has "Crit" but not the word damage in the term is crit chance aka your critical stat that caps out at 100% because there is no difference in having a 100% chance to crit and 150% chance to crit. Both still land no matter what.
Crit damage is damage dealt with crit multiplied by 1.00 + percent.
100k crit with 50% crit damage would be 1.50 times 100k to get 150k damage.

They do this with gold loot terms too.