Here's why:
* Abstract nouns refer to ideas, concepts, qualities, or states of being. Experience is not something you can touch or see directly. It's a collection of events, feelings, and knowledge gained over time.
* You can't hold an experience in your hand. It's something that exists in your mind.
Examples:
* I had a positive experience at the restaurant. (The experience itself is the abstract noun)
* The experience of love is powerful. (Love, being an emotion, is also an abstract noun)
Let me know if you have any other questions!