No, only proper noun (concrete or abstract) should always be capitalized. A proper noun is the name of a specific person, place or thing.
A common noun (concrete or abstract) is only capitalized when it is the first word in a sentence. A common noun is a general word for any person, place, or thing.
Examples:
common abstract noun: I took the liberty of introducing myself.
proper abstract noun: The Statue of Liberty is on an island in New York Harbor.
Abstract nouns:educationtroubleConcrete nouns: elevatortree
Some abstract nouns related to the adjective tolerable are:tolerancetolerationintolerancetolerability
Examples of positive feeling abstract nouns are:carecheerfulnessdelightfriendshiphappinesshopejoypleasurerelaxationsatisfactiontrustwelcome
A proper noun is the name of a specific person, place, or thing.Most proper nouns are concrete nouns, however abstract nouns can function as proper nouns; for example:The Declaration of Independence ('independence' is an abstract noun)"War and Peace" by Leo Tolstoy (both 'war' and 'peace' are abstract nouns)Truth or Consequences, New Mexico (both 'truth' and 'consequences' are abstract nouns)"Yesterday" by the Beatles ('yesterday' is an abstract noun)
The noun 'day' is an abstract noun, a word for a period of time.All nouns for time are abstract nouns because time is a concept.
Abstract nouns:educationtroubleConcrete nouns: elevatortree
Some abstract nouns with M and A are:ambiguityanimositycamaraderiedemocracydramagrammarimaginationlimitationmagicmanners
Both love and hate are abstract nouns.
Some abstract nouns that end with the suffix 'dom' are:freedomwisdomboredomstardomSome abstract nouns that end with the suffix 'ship' are: friendshiprelationshipworshipcitizenship
Abstract nouns are sometimes called 'special nouns' or 'idea nouns'.
Idea nouns are abstract nouns, names for specific persons, places, things, or titles. Examples:agonybargaincheerdogmaeducationfungratitudehopeignorancejoyknowledgelovemadnessnatureorganizationpityquestionragestrengthtrust
Examples of abstract nouns that begin with the letter 'u' are:ubiquityuglinessunderstandingunityunhappinessupheavalurgencyuseusefulnessusury
Examples of abstract nouns that start with D are:dangerdaredestinydignitydiplomacydismissaldoomdramadreaddreamdrudgeryduty
The abstract nouns for these concrete nouns are:motherhoodpriesthoodfriendship
Some abstract nouns starting with M are:majoritymaladymarriagememorymercymomentMondaymoodmurdermystery
Both concrete and abstract nouns are words for things. Both concrete and abstract nouns can be singular or plural. Both concrete and abstract nouns can be common nouns or proper nouns. Both concrete and abstract nouns function in a sentence as the subject of the sentence or clause, and as the object of a verb or a preposition.
Examples of abstract nouns that start with Y are:yearyearningyesterdayyesteryearyin and yangyonder