No, this depends on the function of "or" in the word. In the words door and floor, for example, the "or" is part of the root of the word and doesn't have another function. In words like vendor and grantor, the "or" is a suffix added to the roots "vend" and "grant", and the "or", related to Latin and French, means "one that does a specified thing". So if you can separate the "or" from a root, it is possibe (but not always true) that the noun relates to a person.
Examples of nouns for things that end in 'or':
Examples of nouns ending with -al are:admiralanimalarrivalburialcanalcathedralcerealdealdialeditorialfoalgoalhospitalhymnalidealjackaljournallocalmammalmaterialmealmedalmemorialmetalmineralnumeralopalpalpedalpetalrascalreversalsandalsealtotaltrialurinalvealwithdrawalzeal
Some singular nouns that end with 'tion' are:abbreviationabsolutionaccelerationactionaddictionaffectionafflictionagitationaggregationaviationobligationobservationoccupationoperationoptionorganizationornamentationosculationovationovulation
Examples of nouns ending in -us are:buscactuscallouscircuscitrusdiscuseucalyptusexodusfocusgeniushummusimpetuslotusminusmucusnarcissusnucleusopuspapyrusplatypusplusradiusruckussinusstatusstimulusstylussurplustyphusviruswalrusZeus.
Some examples of abstract nouns ending in -ce are:absenceabstinenceabundanceavaricebenevolenceconfidencecowardicedalliancedeliverancedevianceeloquenceeminenceevidenceexcellencegracegrievancehindranceimpudenceinnocencemalicemalfeasancemenacenovicenuancenuisanceonceopulencepeacepenancepresencepriceprominenceprovidenceprudenceracereferencereliancesciencesentence (punishment)severancesourcestancetolerancetrancetrucetwicevariancevehemencevicevigilance
Examples of nouns ending in -ent:accidentadolescentadvertisementagreementargumentbasementcementcentclientcommentconsentcontentcrescentdepartmentelemententertainmentestablishmenteventfragmentgarmentgentgovernmentimplementinstrumentintentjudgementlamentmanagementnutrientointmentopponentornamentparentpatentpatientpercentpigmentpredicamentpresidentrecipientregimentrentrequirementrodentscentserpentsolventtalenttangenttorment
Examples of nouns that relate to physical properties are:anglecircumferencecubedepthdiameterdimensionheightlengthpitchradiusratioslopevolumeweightwidth
Examples of nouns ending with -al are:admiralanimalarrivalburialcanalcathedralcerealdealdialeditorialfoalgoalhospitalhymnalidealjackaljournallocalmammalmaterialmealmedalmemorialmetalmineralnumeralopalpalpedalpetalrascalreversalsandalsealtotaltrialurinalvealwithdrawalzeal
Some nouns ending in -en are:alienamenbeenburdenchildrencanteenchickendendozenelevenevenflaxenfrozengardenglenheavenhenibuprofenkeenkitchenlinenlistenmenmittennitrogenomenoxenpenprovenqueenravenrottenseenseventeenthenvelveteenvixenwhenwomenyenZen
Some nouns related to drought are:drynessfailureshortagedamagedeartherosionstressfearadversityrelief
Some examples of nouns ending with 'tion' and 'sion' are:appreciationapprehensionbeautificationcaptionconclusiondecisiondeclarationemissionemotionfederationfusiongenerationhydrationillusioninitiationjunctionlegislationlesionmansionmissionmotionnationobsessionovationpassionplantationquestionrationrepressionseclusionsensationtensiontuitionutilizationvacationvisionwesternization
Some singular nouns that end with 'tion' are:abbreviationabsolutionaccelerationactionaddictionaffectionafflictionagitationaggregationaviationobligationobservationoccupationoperationoptionorganizationornamentationosculationovationovulation
No, most, if not all, German nouns ending in -ungare feminine.
Examples of singular nouns ending in 'ch' are:archbatchbeachbirchbleachcatchchurchclutchcouchcrutchditchDutchfinchgulchhitchhunchitchleechlunchmarchmatchnotchostrichperchpitchporchranchspeechwitchZurich
Examples of singular nouns ending in -io are:audioimpresariopatioPinocchiopistachiopolioportfolioradioratiotrio
Some nouns ending with 'or' are:abductoractoralligatorancestoranchorarborardorauditorauthoraviatorbachelorbehaviorcalculatorcamphorcandorchancellorchiropractorcollectorcolorcondorconductorcreatorcursorcuspidordebtordecordetectordictatordirectordistributordoctordooreditoreducatorelevatorequatorerrorescalatorexcelsiorexhibitorexteriorexterminatorfactorfavorfervorfloorflourflavorfurorgeneratorgladiatorgovernorharborhonorhorrorhumorillustratorimpostorincineratorincisorincubatorinspectorinstructorinsulatorinteriorinventorinvestorinvestigatorjanitorjurorlaborlegislatorliquormanormatadormayormentormetaphormeteorminormirrormonitormoormotornarratornavigatorneighborodorpallorparlorpastorpredatorprocessorprofessorprojectorproprietorprosecutorprotectorradiatorrancorraptorrazorregulatorrespiratorrigorrotorrumorsailorsaviorsectorsenatorsimulatorsplendorsponsorsqualorsuccessorsuccorsuitorsupervisorsurveyorsurvivortailortenorterrortractortraitortremortumortutorvalorvaporvendorvictorventilatorvictorvigorvisitorvisorwarrior
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Examples of nouns ending in -y that is preceded by a vowel:alleyboycaychimneydaydonkeyessayjoykeymonkeyplaytoyturkeyvalleyway