Hey there! So, you've asked me something about spirit stuff. Lucky for you, I'm going to tell you everything because you're confused and I love talking about myself. What I don't love is having to type out the same thing a million times, which is why right now you're reading a response I wrote earlier and just copied over here.

1) I'm a nature spirit. Not like a ghost, a magical kind of spirit. To be totally exact, I'm a spirit of winter.
2) "But Jack, what does that mean?" Well, sir/ma'am/other, that means winter is my deal. All of it! Santa handles all of Christmas, doesn't he? It's the same thing: I handle winter.
3) Santa is real. Other names you may know that are real spirits I have met: the Easter Bunny, the Tooth Fairy, the Sandman, the Boogeyman.
4) Yes, I can absolutely make it snow. That's what I do. If something is cold or icy, there's a pretty strong chance I can make it happen. I also fly on the North Wind, which I can command. It's great, you're very impressed, I know. ;)
5) I'm around three hundred years old, can't give you exact numbers because it's not like settlements in colonial America just had calendars hanging up all over the place. Spirits are immortal and all the ones I've ever met are way older than me.
6) Where I come from, a spirit can only be seen, heard, touched by a human if the person believes in that particular spirit.
7) Stories about us are probably not true, sorry to burst your bubble but not really, most of those stories kind of suck.

If you have any further questions, please see Jack Frost!