Next theme: "the struggle between good and evil". Replace "struggle" with clash, "good" with virtue, "evil" with darkness.
I'll do this sentence by sentence, making sure not to miss any words. Also, check that the structure remains correct after substitution. Proper nouns like "J.R.R. Tolkien" will stay as they are. silmarillion ebook
"fantasy" could be "fantasy|imaginary|mythical". Next theme: "the struggle between good and evil"
"is" as before.
In the section about friendship and loyalty: friendship (companionship|camaraderie|bonds), loyalty (devotion|fidelity|steadfastness). "good" with virtue
First, I'll note the proper nouns: "The Silmarillion", "J.R.R. Tolkien", "The Silmarillion", "posthumously", "Christopher Tolkien", "1977", "Middle-earth", "Elves", "Valar", "angelic beings". These should remain unchanged.