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
Abstract nouns that start with Q are: qualityquandaryqueryquestquipquirkquotaquotient
Some examples of abstract nouns ending in -ce are:absenceabstinenceabundanceavaricebenevolenceconfidencecowardicedalliancedeliverancedevianceeloquenceeminenceevidenceexcellencegracegrievancehindranceimpudenceinnocencemalicemalfeasancemenacenovicenuancenuisanceonceopulencepeacepenancepresencepriceprominenceprovidenceprudenceracereferencereliancesciencesentence (punishment)severancesourcestancetolerancetrancetrucetwicevariancevehemencevicevigilance
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 holiday nouns are:barbecuecelebrationchampagneconfettidecorationseggnogflagsgiftsnoise makerspartyroast turkeystreamerssongs
Examples of nouns for things are:appleballooncardiamondeducationflowergardenhydrogenicejokekitchenlunchmoneynecktieonionpromisequiltreasonstartoothumbrellaviolinwaterx-rayyearzenith
Some examples of singular nouns are "book," "dog," "cat," and "table."
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
Examples of nouns beginning with D are:daisydamagedangerdelightDenmarkdevildictionarydimedinnerdogdolphindoordoughnutdraindrawerdungeonduodutydyedynesty
Some examples of nouns that end with 's' are:ArkansasblissbosscactuscircusclasscrisisCyprusdressglassharnessibisirisKansaslensmassmessmolassesMosesmossoasispantsParisscissorsthesis
Some examples of nouns that are also verbs:aidbailcutdockedgefangrillhelpinchjokekisslookmakenailoilpartquestionridestartearusevaluewateryellowzap
Some common nouns that start with 'i' are:ibexibisiceiconideaidentityidolimaginationimpinchinformationinkinninsightinspirationinventioninundationionirisironironyislandisolationissueisthmusitem
Some examples of plural nouns not ending with 's' are children, men, women, mice, and geese.
Examples of gender nouns for males:fathersonunclebrothermankingmanboarbuckbullramroosterExamples of gender nouns for females:motherdaughterauntsisterwomanqueensowdoecowewehenExamples of common gender nouns:parentchildrelativesiblingpersonneighborfriendbirddeersheephorsecatExamples of neuter gender nouns:anchorballchairdooreducationfacegearharpicejokekitelunch