The document discusses several conjunctions that can be used to indicate contrast or concession: although, though, even though, in spite of, despite, and however. It provides examples of how each conjunction is used grammatically in a sentence, such as "Although + Subject + Verb" or "despite/in spite of + noun/pronoun." Even though is described as the strong form of although. However can be used before adjectives or adverbs to emphasize those words.