Singapore Airlines and Emirates still refer to crew as both cabin crew and steward/ess. Though the official title for EK is "Steward/ess" -it's on the name tags. CSM/OBM/CSD are all Purser. Senior crew at EK are Senior Flight Steward/ess.
As a pax I would say "the other crew" or "your colleague" or refer to them by name if I knew it.