My understanding of the difference is rooted in the opinions of Dolores French who was a sex worker and political activist. She advocated for decriminalization, not legalization, because it was more beneficial to sex workers. I find some articles that fit with that framework and some that don't.

I don't think it's just me. It's a little more complicated than that.

I do try to be mindful that the words get used inconsistently and I do try to make a point of clarifying my intended meaning. I'm human and I don't always remember that this is an ongoing issue.