'Idea nouns' are called abstract nouns. An abstract noun is a word 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 we know, understand, or experience emotionally. Examples of idea nouns are:
justice
fairness,
equality
chaos
worship
compassion
knowledge
attention
panic
hope
liberty
happiness
time
emotions
love
sadness
hope
Common nouns are words for any person, place, thing, or idea. Some examples are:
A common noun is a general word for any person, place, thing, or idea.
Example sentences (common nouns in bold):
My brother took the bus to the city to get his girlfriend a gift.
The monument was made of granite with a plaque honoring the early settlers of our town.
Mom, our school burned to the ground, so the students have the day off.
My hope is to become a great artist in the future.
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
Idea nouns are abstract nouns, names for specific persons, places, things, or titles. Examples:agonybargaincheerdogmaeducationfungratitudehopeignorancejoyknowledgelovemadnessnatureorganizationpityquestionragestrengthtrust
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
nouns
Some examples of holiday nouns are:barbecuecelebrationchampagneconfettidecorationseggnogflagsgiftsnoise makerspartyroast turkeystreamerssongs
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
love, hate, fantasy, dream, inspiration, cowardice, courage, bravery
Some examples of 'quality of mind' nouns, also called abstract nouns, are:anxietybraveryconfidencedecisivenesseuphemismfungenerosityhappinessisolationjoyknowledgeluxurymemorynewsopinionpurposequestionreasonsorrowtroubleurgevaluewealthyearzeal
Examples of nouns for things are:appleballooncardiamondeducationflowergardenhydrogenicejokekitchenlunchmoneynecktieonionpromisequiltreasonstartoothumbrellaviolinwaterx-rayyearzenith
Examples of common nouns for ideas (abstract nouns) are:arithmeticbeliefcouragedangereducation
Some examples of singular nouns are "book," "dog," "cat," and "table."
Nouns that describe (name) an idea or concept are known as abstract or special nouns.An abstract noun (special noun) is a noun that refers to a quality, idea or emotion. These nouns are considered special because you cannot touch, taste, see, hear or smell them like other nouns, e.g. ice cream.Examples of abract (special) nouns are:friendshipfreedomfearloveloyaltyideajoysentimentfeelingemotionanxietySee the related link for an interactive explanation.
Examples of singular nouns ending in -io are:audioimpresariopatioPinocchiopistachiopolioportfolioradioratiotrio
Examples of singular nouns ending in 'ch' are:archbatchbeachbirchbleachcatchchurchclutchcouchcrutchditchDutchfinchgulchhitchhunchitchleechlunchmarchmatchnotchostrichperchpitchporchranchspeechwitchZurich
Examples of nouns that end with the letter T are: alphabetbatcometdesertelementfootguesthatinstantjetknotlightmintnightocelotpointquiltrootsalttentultraviolet vaultwalletxystyeastzest