The web novel often has more raw and unedited content. The light novel, on the other hand, may have some refinement in terms of language and presentation. For example, the light novel might have better - organized paragraphs and more polished dialogue to appeal to a wider range of readers.
In the context of 'overlord translation web novel', 'Overlord' is likely the title of a web novel. It might be a story about a powerful being, perhaps an overlord - a dominant or ruling figure in a fictional world created in the novel.
The light novel is often more popular among a broader audience. It has the advantage of professional packaging, with nice covers and illustrations. It's also more likely to be available in physical stores, which gives it more exposure.
Another one could be 'Sword Art Online'. Although it has some differences, it shares the idea of a virtual world where the characters have to fight and survive. It also has a strong lead character like 'Overlord'.
Volume 15 of 'Overlord' light novel likely delves deeper into the power dynamics in the story. Ainz's unique form of leadership and his attempts to assert dominance while also maintaining some semblance of order are probably explored further. The magic system in the world of 'Overlord' may also be expounded upon, with new spells or magical artifacts being introduced that could change the balance of power among the different factions in the story.
The Overlord light novel has indeed come to an end. All the main story arcs have been wrapped up and it provided a satisfying conclusion for the readers.
The Overlord light novel is definitely worth reading. It has a unique premise, rich lore, and keeps you hooked from start to finish. The writing style is also quite enjoyable.