Here's why:
* Abstract nouns represent concepts, ideas, qualities, or states of being. They are not tangible objects.
* Common nouns represent general categories of people, places, or things.
"Glory" represents a concept: a state of great honor, praise, or admiration. It's not a physical object you can touch or see.
Example:
* "He achieved glory on the battlefield." (Glory is a concept, not a physical thing.)
Let me know if you have any other word you'd like to categorize!