Abstract nouns can be common or proper nouns. Whether a noun is abstract or concrete is determined by its definition or its use, not whether it is common or proper.
Examples:
The abstract noun form for the verb to frequent is frequency.The abstract noun form for the adjective frequent is frequentness.
Disobedience is the abstract noun form.
The abstract noun form is gluttony.
Some common, abstract nouns (synonyms) for the common, concrete noun 'mother' are:ancestorcaregivercreatorforebearernurturerpredecessor
Comprehensiveness is the abstract noun for the adjective comprehensive. Another abstract noun form is comprehension.
The abstract noun form of the noun hero is heroism (also a common noun).
Patriotism is the abstract noun form.
The abstract noun form of the concrete noun 'idiot' is idiocy.
There is no abstract noun form for the concrete noun 'rascal', a word for a mischievous person or animal or an unscrupulous person.
The noun 'Precious' (capital P) is the name of a person, a proper noun, a concrete noun.The word 'precious' (lower case p) is an adjective, a word to describe a noun.The abstract noun form of the adjective precious is preciousness, a common noun.
The abstract noun for the common, concrete noun 'author' is authorship.The abstract noun form of the verb to author is authoring.
The noun 'games', the plural form of the noun 'game', is a common noun as a general word for a form of play or sport, for enjoyment or competition.The noun 'games' is an abstract noun as a word for a concept.
The noun form is description, a common, singular, abstract noun.
A proper noun for the common noun 'slave' is the name of a slave, such as Nat Turner or Sojourner Truth. The abstract noun form of the concrete noun 'slave' is slavery.
The abstract noun for the concrete noun 'boy' is boyhood, a word for a period of time in a person's life.
The noun 'hate' is an abstract noun, a word for intense or passionate dislike; a word for an emotion.A related abstract noun is hatred.The abstract noun form of the verb to 'hate' is the gerund, hating.The concrete noun form of the verb to 'hate' is hater, a word for a person.
The noun could be "limitedness" which is related to the abstract noun "limitation." There is a more common negative form, limitlessness.