There is, and yet there isn't.
When I was of comic-book-reading age* in my tweens and early teens (the early 1980s), comic books were short magazines of 20-odd pages (not counting ads), in which storylines generally carried over multiple issues but rarely more than two, or on the outside three.
In recent years, while the physical medium hasn't changed (it's still a magazine of 20-odd pages), the stories have become longer and more complex. They span half a dozen or more issues, and then later get republished in a single trade paperback as a graphic novel.
Obviously the comic publishers have realized there's more than one potential market for the same story.
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*Not that I ever really outgrew them, I mean . . .