Common nouns are words for a person, place, or thing. Proper nouns are words for the name or title of a specific person place or thing.
Person: queen (common), Queen Elizabeth II (proper)
Place: city (common), New York City (proper)
Thing: cabin (common), Uncle Tom's Cabin by Harriet Beecher Stowe
Examples of common nouns are:
actor
bear
carrot
doctor
ear
fruit
grass
hanger
ice
jonquil
kiss
letter
mackerel
notebook
oval
puddle
quail
rug
scar
television
umpire
vine
water
xylophone
yurt
zebra
Abstract nouns are words for ideas, things that can't be experienced by any of the five senses; they can't be seen, heard, tasted, smelled, or touched. Concrete nouns are words that can be experienced by one or more of the five senses.
Examples of abstract nouns are:
anger
beauty
change
dread
envy
fear
glamor
happiness
ignorance
joy
kosher
luck
measure
nonsense
ornate
pride
quaint
rest
trouble
uneasiness
value
wish
excitement
youth
zeal
Some example of abstract nouns that are principles are:democracydisciplinefreedomhonestyhonorintegrityjusticelibertyloyaltyvalor
Some common, abstract nouns (synonyms) for the common, concrete noun 'mother' are:ancestorcaregivercreatorforebearernurturerpredecessor
Examples of concrete nouns in sentences:Your sandwich is on the table.My mother made my dress.The house on the corner is for sale.In New York City we visited the Metropolitan Museum.Examples of abstract nouns in sentences:We're taking our vacation in August.My education is my priority.The problem is that I don't have a job.Have you read "War and Peace" by Tolstoy?
A common noun is a general word for any person, place, or thing. Some examples of common nouns are:angeranimalapplebabyballbookcarchaircoatcountry
Examples of nouns for things are:appleballooncardiamondeducationflowergardenhydrogenicejokekitchenlunchmoneynecktieonionpromisequiltreasonstartoothumbrellaviolinwaterx-rayyearzenith
Examples of common abstract nouns:abilityboredomcharitydangeregofeargratitudehourintelligencejusticeknowledgelibertymoodneedopinionproblemquestionreasonseasontreasonurgevirtueworkyesterdayzeal
Some common nouns that start with 'i' are:ibexibisiceiconideaidentityidolimaginationimpinchinformationinkinninsightinspirationinventioninundationionirisironironyislandisolationissueisthmusitem
If by 'invisible' you mean abstract nouns, words for things that can't be seen, heard, smelled, tasted, or touched, some examples are:attitudebeautycaredestinyeducationfriendshipgratitudehopeideajokekindnesslovemysteryneedopinionpeacequestreasonseasontrusturgevalueworryyearzeal
No, not all abstract nouns are uncountable. Some examples of countable abstract nouns are:an agreement; a number of agreementsan idea; a lot of ideasa lie; too many liesmy life; the lives of othersan opinion; a lot of opinionsa question; a few questionsThe most common abstract nouns that are uncountable are nouns for concepts and gerunds (verbal nouns). Some examples are:educationinformationknowledgeplayingrunningskating
Some examples of 'quality of mind' nouns, also called abstract nouns, are:anxietybraveryconfidencedecisivenesseuphemismfungenerosityhappinessisolationjoyknowledgeluxurymemorynewsopinionpurposequestionreasonsorrowtroubleurgevaluewealthyearzeal
Some examples of abstract nouns for thoughts:thoughtsideasbeliefknowledgecuriositymemory
Some examples of abstract nouns ending in -ce are:absenceabstinenceabundanceavaricebenevolenceconfidencecowardicedalliancedeliverancedevianceeloquenceeminenceevidenceexcellencegracegrievancehindranceimpudenceinnocencemalicemalfeasancemenacenovicenuancenuisanceonceopulencepeacepenancepresencepriceprominenceprovidenceprudenceracereferencereliancesciencesentence (punishment)severancesourcestancetolerancetrancetrucetwicevariancevehemencevicevigilance
Some abstract nouns that end with the suffix 'dom' are:freedomwisdomboredomstardomSome abstract nouns that end with the suffix 'ship' are: friendshiprelationshipworshipcitizenship
Examples of abstract nouns that start with P are:partypatiencepeacepietypitypleasurepoliticspovertyprerequitsitproblemproofpunishment
Some example of abstract nouns that are principles are:democracydisciplinefreedomhonestyhonorintegrityjusticelibertyloyaltyvalor
Examples of abstract nouns that begin with the letter M:madnessmagicmementomemorymightmissionmockeryMondaymoodmurdermysterymythSome are: maturitymeaningmeannessmemorymercymotivationmovementmundanity
Some example of abstract nouns that are principles are:democracydisciplinefreedomhonestyhonorintegrityjusticelibertyloyaltyvalor