Explain the concept of comparative and superlative adjectives.

Comparative and superlative adjectives are used to compare and describe the degree of a quality or characteristic possessed by different nouns.

Comparative adjectives are used to compare two nouns, indicating that one noun has a higher or lower degree of the quality being described than the other. They are formed by adding "-er" to the end of the adjective for short adjectives (e.g., tall → taller) or by using "more" before the adjective for longer adjectives (e.g., beautiful → more beautiful). For example, "She is taller than her sister" or "This book is more interesting than the previous one."

Superlative adjectives, on the other hand, are used to compare three or more nouns, indicating that one noun has the highest or lowest degree of the quality being described. They are formed by adding "-est" to the end of the adjective for short adjectives (e.g., tall → tallest) or by using "most" before the adjective for longer adjectives (e.g., beautiful → most beautiful). For example, "He is the tallest person in the room" or "This is the most delicious cake I have ever tasted."

It is important to note that some adjectives have irregular forms when forming comparatives and superlatives. For example, "good" becomes "better" in the comparative form and "best" in the superlative form.

Overall, comparative and superlative adjectives allow us to express comparisons and highlight the varying degrees of qualities or characteristics possessed by different nouns.