How hard is it for a snowboarder to switch to downhill skiing?

I’ve been snowboarding for over 10 years now. I would consider myself Intermediate (I can handle black diamonds and minimal glades, but I’d rather stay on blue squares). I really like carving down the mountain, but I have no interest in all the tricks and showing off in the terrain park. As I get older, I’ve been considering switching to skiing for something new to try. (Also, I’m the only boarder out of all of my cousins/family that I’ve been going to the mountain with recently….noticing fewer boarders this year, too.)

In high school, I was on the Nordic Ski team. I know that downhill and cross-country are totally different, but perhaps it is similar enough to give me an idea?

How hard is it to make the switch over from snowboarding to skiing?