<p>^I would buy both. “The Core” has more of the frequently used words, but “the Toughest” one has the more difficult ones.</p>
<p>the words dont overlap rite?</p>
<p>The words in “core” do not overlap with those in “toughest”, that’s right.</p>
<p>Some of the words are crossed referenced in the examples in each book. Chapter 6 in Vol. 2, “Literary Terms” was helpful in my AP Lit. Class.</p>
<p>^Hornfrogfan is right. The words in Chapter 6 are used a lot on the AP Language and AP Literature exams. The words in Chapters 9 and 10 are all Level 5 words ie they were answers to Level 5 sentence completions and Level 5 critical reading questions.</p>