I regularly see the term neurodiverse used when what the person is actually referring to is neurodivergent. Saying ‘I’m neurodiverse’ or ‘My DH is neurodiverse’, isn’t particularly meaningful. I see neurodiverse used on a lot of websites as well, as an umbrella term for many neurodivergent conditions, which doesn’t help either.
Neurodiversity is simply a concept which recognises the variety of ways human brains can function. It is akin to Biodiveristy.