1) The document discusses comparative adjectives and how to compare two things using adjectives with -er endings like "stronger" or "more/less" for adjectives with two or more syllables.
2) It provides examples of sentences using comparative adjectives like "Captain America is stronger than Spiderman" and discusses irregular adjectives like "good" and "bad".
3) The document also covers using "as...as" to show things are equal and "not as...as" to show negative comparisons.