* Common Usage: "Imagination" is usually used as a noun, meaning "the ability to form mental images and concepts." For example: "She has a vivid imagination."
* Less Common Verb Usage: When used as a verb, "imagine" means "to form a mental picture or concept of." This is usually phrased as "to imagine something" or "to imagine that." For example:
* "I can't imagine living in a city."
* "He imagined he was flying through the air."
Let me know if you have any other questions about words!