Correct. Bootcamp is simply a friendly name to the tool that helps to resize an OS X partition to make room for another OS (Windows officially). It also helps by downloading the newest Windows drivers for the Mac and offers to burn them to a CD or USB stick. And on newer systems without a DVD drive, it will help convert a Windows 7 ISO to a bootable USB drive.

Macs use EFI to boot, a newer specification then the legacy BIOS. EFI on the Mac (and PCs that support it) include a module to add BIOS compatibility for "legacy" systems. This allows non EFI compatible operating systems to still function. The Mac EFI is where the actual multi OS support comes from, either in presenting the boot menu seen when holding down Option during boot, or is what receives the commands from the OS to boot into a different OS next time.