Today I have run into with a word "zany". I have never heard it before. I opened my dictionary I got the meaning. I'm not sure whether is this popular word to use or not? I have a plenty of words like this and I think they are rare. So, if they're rare does it mean they sound strange or unnatural?

Moreover, I have a list of "strange words for me". I can show you it and, I hope, you'll say me are they acceptable or not.

Thanks in advance.