That threw him off the loop for a while there. To Cloud, it was such an obsolete word since they decided to stop using it and now, here was someone to whom materia could mean a world. It was another reminder for Cloud that Zack was from the past and he had to be extra careful, if he could state the obvious.
"Lots of things don't exist here," he said as he went around Fenrir. "Materia, Lifestream, Holy, Meteor...it's really different." Whether he liked it or not, he didn't really know. He swung his leg over at Fenrir as he started her up. "But you'll manage. Anyway, Welcome Center? Get your stuff unpacked and all..."