If you want you can use the now defunct web search engine boitho.com list of adult words. It is avalibal at https://github.com/searchdaimon/adult-words .

We mostly filtered out porn by using a two word phrase method. There were a lot of edge cases because many potentially dirty concepts are made up of words that are not bad when used alone. For example a text can have both "girls" and "nude" in it without being vulgar, but if it has the phrase "nude girls" the chance for it being pornografic is much higher.