"Content" -material.
Sadism and Masochism. Alternatives could be pain-related roles, pleasure-pain dynamics, or SM activities. SM activities.
"Share" -relate.
"Tastes and preferences" -preferences.
First, I need to parse the text into sentences and then each word. I'll have to identify which words are proper nouns. In the provided example, "BDSM" is a proper noun and shouldn't be changed. Words like "Boundaries" and "Safe Sex" might be part of section headers, which could be considered proper nouns, but I'll check the user's example to see if they followed that.