* Common noun: Refers to a general category of things (e.g., dog, chair, happiness).
* Proper noun: Refers to a specific person, place, or thing (e.g., John, London, Eiffel Tower).
* Collective noun: Refers to a group of people, animals, or things (e.g., flock, team, family).
* Abstract noun: Refers to a concept, quality, or idea (e.g., love, justice, freedom).
The problem lies in the combination:
* A proper noun cannot be common. Proper nouns are specific and unique, while common nouns are general.
* A collective noun can be abstract. For example, "the community" refers to a group (collective) of people, but it's also an abstract concept of shared values and interests.
Therefore, the term "common proper collective abstract noun" is a contradiction. A noun can be either common or proper, collective or abstract, but not both at the same time.