CD-R (one-time input) and CD-RW (erasable) are called CD discs, which can burn CDs, MP3 audio files, VCD video files and data discs.

DVD+R (one-time entry), DVD+RW (erasable), DVD-R (one-time entry) and DVD-RW (erasable) are called DVD discs. You can burn DVD video discs. There are many kinds of DVD discs. Whether it can be played on a DVD player depends on what kind of DVD disc the DVD player is compatible with. DVD-R DVD discs can be played by ordinary DVD players, and the rest depends on the compatibility of the players.