Yes, the nouns 'safety' and 'concern' are abstract nouns.
The noun 'safety' as a word for a state of being protected from potential harm is an abstract noun, a word for a concept.
The noun 'concern' as a word for a matter of importance or concern is an abstract noun, a word for an emotional feeling; a word for a business or a firm, a word for a concept.
Note: The noun 'safety' is a concrete noun as a word for a device designed to protect and prevent harm; a word for a physical thing.
Abstract nouns are sometimes referred to as special nouns. Abstract nouns are words for things that can't be experienced by any of the five senses; they can't be seen, heard, smelled, tasted, or touched. Abstract nouns are words for things that are known, understood, believed, or felt emotionally.Examples are:attitudebeliefcharmdangereducationfear
Examples of abstract nouns are:friendshipmemoryopportunitypatience
Abstract nouns are words for things that can't be experienced by any of the five senses; they can't be seen, heard, smelled, tasted, or touched. Abstract nouns are things that are known, understood, believed, or felt emotionally.Examples of abstract nouns are:abhorrenceabilityaffectionaltruismangerannoyanceantipathyardorattachmentaversionbenevolenceblissbraverycarecharitycheerfulnesscontemptcouragedepressiondesiredesperationdestinationdiscorddisgustdislikedistasteduplicityecstasyeducationeffortelationemotionenjoymentenmityenthusiasmeuphoriaexertionexhilarationexuberancefaithfeelingfelicityfondnessforcefortune,friendshipfunfurygladnessgleegoodwillgreedhappinesshatredhope,inclinationintimacyireirritationjoyjubilationkindnesslifeloathinglonelinesslovelucklustmiserynecessityneed,opinionopportunityoptimismoutragepassionpessimismpleasurepowerpredilectionrageraptureregardreligion,revulsionsadnesssolicitudestrengthsympathytemperthrillvalor,vehemencevexationwant,wantonnessweaknessworshipwrathzeal
Is Chicago a abstract noun or a concrete noun
Abstract nouns are sometimes referred to as special nouns. Abstract nouns are words for things that can't be experienced by any of the five senses; they can't be seen, heard, smelled, tasted, or touched. Abstract nouns are things that are known, learned, understood, believed, or felt emotionally. Examples are:attitudebeliefcharmdangeremotionfeargenerosityhappinessignorancejoy
The abstract nouns in the sentence are:safetyconcern
The safety of the passengers in the concern of William J. Snow, the pilot, and everyone at TWA
Some abstract nouns for the expression 'cold feet' are concern, nervousness, or timidity.
saftey,passengers,concern,pilot
Abstract nouns:educationtroubleConcrete nouns: elevatortree
The concrete nouns in the sentence are:passengersWilliam J. Snowpilot
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'.
saftey,passengers,concern,pilot
Idea nouns are abstract nouns, names for specific persons, places, things, or titles. Examples:agonybargaincheerdogmaeducationfungratitudehopeignorancejoyknowledgelovemadnessnatureorganizationpityquestionragestrengthtrust