Think of tags as like a book index where you find words and which pages they are on, the same principle applies here. Although it's taken a stage further so it might not be the word, but the subject, so for example if you're looking for things to do with fractal gradients for example. A tag may bring back posts with gradient files, as well as posts that discuss gradients, or tutorials about them.
Tag: rose
Rose 2 Script for fractal flowers
Like the Rose script, Rose 2 generates lovely rose-like flowers. Lots of randomization.
Rose Script for fractal flowers
Generates beautiful spiral like flowers. Lots of randomization. Fun script to play with.