are modifiers. They describe nouns & specify size, color, number, etc., e.g., The small "x" in the upper corner of the window is used to exit your file.
Words that describe nouns. When asked to address the author's use of diction, look for any unusual adjectives used or any common adjectives used in uncommon ways. example- "The moth's enormous wings are velveted in a rich, warm brown, and edged in bands of blue and pink delicate as a watercolor wash." Annie Dillard "She is sitting on the stoop of a rickety, wooden, one-family house in Birmingham." Martin Luther King, Jr.