The Progressive Caucus consists of well-meaning people with a fairly sound grasp of policy who suffer from delusions of grandeur as to their leverage over moderate Democrats and their support from the population as a whole. The Freedom Caucus is a bunch of nihilists who believe it is their mission to blow up the system and see what happens next. For them, it’s all about posturing, not policy.
The two groups are often compared, but as you can see, they’re very different.