I've always seen a skeptic as what you have defined someone that needs evidence to believe something. Whereas, I have always compared cynicism to being a pessimist of sorts, people who have no faith in humanity or think nothing is really worth it because we all die in the end.

Skeptic. I can be and often am cynical in my observations when pressed by some would-be angel, but as a person, I'm not. I'm also prone to being a bit toxic and sarcastic when it gets to be a bit much. I try to avoid such confrontations whenever possible, but get militant as all hell when they start moving on politics, education, and law.

i'm neither.
But i do use them in my writing to make a point when needed.

semantics will drive you nuts. realist for me

I've wondered this about myself before.
At first, I didn't want to accept that I'm a cynic, but I've learned to embrace it
I'm still a skeptic too.

Yep

I guess I would qualify as being both.

I'm very much a skeptic and a cynic. I don't accept any claim at face value, needing evidence. And when it comes to people's motivations, I think there's a lot of self-interest, even much of the time when people feel their motives are genuine and pure.