There was no indication in Ven's expression that he was familiar with either of those terms -- all the same, Rukia's claim of not being human received zero reaction. Rather, he was focused on her first explanation.

"Huh... It was the same for me -- I'm not as strong or fast as I usually am," he remarked with another light frown. He'd adjusted for the most part, but he still noticed the difference from day-to-day. "Kidou -- is that a weapon?" he guessed uncertainly.