Perversion and Paraphilia
I still sometimes see the term "pervert" used on DA; it's a funny word and I don't think the people using it really understand what they're talking about. Frequently, it's in a comment such as "...I hope I don't sound perverted if I say 'she sure has a nice backside'" Why do I say they don't understand the word? Because liking is a perfectly normal response to a nice backside and "perversion" implies abnormal behavior. Worse than abnormal, in fact - it implies a moral dimension to the behavior.
Playing online dictionary wars is something I want to avoid, but here's a definition of "perversion" from Merriam-Webster