Yes, "art," "creative," and "energetic" can be classified as adjectives. However, it's important to clarify:
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"Creative" and "energetic" are definitely adjectives. They describe nouns: "creative" describes the quality of being able to create, and "energetic" describes someone who has a lot of energy.
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"Art" is technically a noun, referring to the various forms of creative expression such as painting, sculpture, music, etc. However, it can be used in certain contexts as part of a compound adjective, like "art-inspired" or "art-related."
If you need more help or examples, feel free to ask!