The textbook definition would be the application of theory to action. It’s basically leftist slang for putting the theories of socialism/communism/humanism into practice in a real way.

It can definitely be a form of praxis.

I’ve had no trouble with any of my steam games so far. I’ve downloaded about half my library, which is an eclectic collection of games from the last 20 years or so.

My computer had a key. The trick was to grip it between your toes.