Gender sucks. It’s a load of made-up rules about what people must do and what they shouldn’t. It’s based on your biological sex, but it is in no way the same thing. It’s socially enforced through shame: this affects boys/men as well as women and girls, and hits women a
Class analysis means looking at what generally happens with people who share a unique set of features. This sometimes confuses people. As a feminist, I might say “men oppress women”, then half a dozen people come along to tell me they know men who’ve never oppressed a female – otherwise known as NAMALT for not all men are like that. It completely misses the point of the analysis.
Patriarchy means a male-dominated society. While some cultures are far more patriarchal than ours in the UK, there is no place on earth that values women the same as men. Read a short explanation by Fair Play For Women.