Difference between CDRW & DVDRW?

I have a Samsung CDRW/DVD SM-348B T501 in my computer. I can listen to cds on it, and it has been used in the past to burn music cds. Why when I try to put pictures onto a cd the drive does not see that there is a DVD+R in the drive!
I would truly appeciate some help with this!
Thank you in advance!

I haven’t taken the time to google that model number, but a CDRW/DVD is what they call a “combo” drive - it will read and burn CDs, but only read DVDs. So give your blank DVDs to someone with a DVD burner!

Thank you so much!!!
That makes sense.