Yes, it is allowed to use adjectives in nominal style. Adjectives can be used as nouns to represent a group or category of people or things with similar characteristics. For example, "the poor" or "the elderly" are common examples of adjectives used in nominal style to refer to specific groups of people. This style can help simplify language and make it more concise. **

Colors are not adjectives in themselves, but they are often used as adjectives to describe nouns. Adjectives are words that modify or describe nouns, and colors can be used in this way to provide more detail or information about the noun. For example, in the phrase "the red car," "red" is used as an adjective to describe the car. So, while colors are not technically adjectives, they can function as adjectives in sentences. **

Yes, adjectives can be comparative. Comparative adjectives are used to compare two things, showing the difference in degree between them. They are often formed by adding the suffix "-er" to the end of the adjective, or by using the words "more" or "less" before the adjective. For example, "taller" is the comparative form of the adjective "tall," and "more beautiful" is the comparative form of the adjective "beautiful." **

Adjectives are words that describe or modify nouns and pronouns. They can describe qualities such as size, color, shape, age, and more. Some examples of adjectives include big, red, round, old, and beautiful. Adjectives help provide more detail and information about the nouns they are describing. **

Highfalutin adjectives are words that are pretentious, pompous, or overly elaborate in nature. They are often used to make something sound more impressive or important than it actually is. These adjectives can come across as insincere or exaggerated, and are typically used to show off one's vocabulary or to sound more sophisticated. **

Dative adjectives are adjectives that are used to describe nouns in the dative case. In many languages, including German and Latin, the dative case is used to indicate the indirect object of a verb or the recipient of an action. Dative adjectives agree in gender, number, and case with the noun they are describing, and they often convey a sense of possession, benefit, or disadvantage. For example, in German, the dative adjective "guten" (good) would be used to describe a masculine singular noun in the dative case, such as "dem Mann" (to the man). **

Vivid adjectives are descriptive words that create a strong and clear mental image in the reader's or listener's mind. They are used to add detail and depth to a description, making it more engaging and memorable. Vivid adjectives often evoke sensory experiences, such as sight, sound, taste, touch, and smell, and can help to bring a scene or character to life in a story or conversation. **

Possessive adjectives are used to indicate ownership or possession of a noun. They are placed before the noun and agree in gender and number with the noun they modify. In English, possessive adjectives include words like "my," "your," "his," "her," "its," "our," and "their." For example, in the sentence "I love my dog," "my" is a possessive adjective indicating that the dog belongs to the speaker. **