Josei means “women”
Josei anime is intended for women older than high school age. It’s the next female demographic after shôjo. Much like shônen and seinen there is a little overlap, with some anime fitting both demographics.
Josei might share some traits with shôjo, but josei tends to be more realistic. The stories portrayed in Josei anime are usually more like real life than the stories found in shôjo. This is because the Josei audience is more mature, and want more mature anime.