Here are some points of similarity:
* Themes: Both the series as a whole and the Deathly Hallows book explore themes of love, loss, friendship, sacrifice, good vs. evil, and the nature of power.
* Characters: All the major characters from the previous books appear in Deathly Hallows, and their development and relationships are central to both the book and the series.
* The Dark Mark: The Dark Mark, a symbol of Voldemort and his followers, is a significant visual element in both the series and Deathly Hallows. It represents the threat of evil and the dangers facing the wizarding world.
* Magic and the Supernatural: Both the series and the book heavily feature magic, spells, creatures, and magical objects, which are central to the story and its events.
* The Prophecy: The prophecy concerning Harry and Voldemort's fates plays a crucial role in both the series and the book, driving much of the action and conflict.
However, it's important to note that while the Deathly Hallows book shares these similarities with the series as a whole, it also stands out in several ways.
* Focus on the Trio: Deathly Hallows places a greater emphasis on the journey of Harry, Ron, and Hermione, their struggles, and their growth as individuals.
* Darker Tone: The book adopts a darker tone than previous entries, reflecting the heightened stakes and the increasing threat posed by Voldemort.
* Resolution: The book provides closure to the major storylines and conflicts introduced in the series, culminating in the final battle and the resolution of the conflict between good and evil.
So, while the Deathly Hallows book shares many similarities with the Harry Potter series, it also offers a unique experience as the final chapter and a culminating point in the story.