Some nouns that start with X are:
Examples of nouns that start with 'x' are:xenonxenophobiax-rayxylemxylophone
Concrete nouns that start with X are:xylophonex-ray machinex-ray fishXerox copy
Some nouns that start with A are:apple,avocado,armarmadilloarchArchiealleyallergyAmyarmyanvilangel
Some nouns that start with A are:acheacrobatadditionageagentaggressionallotmentamberamplifieranchorangelangerangleanvilappleargumentarrivalasparagusassailantassociationaugeravengeravenueaverageawl
Some nouns that end with the letter X are:annexanthraxapexboxclimaxcortexcruxduplexequinoxfaxfixflaxfoxhelixhexhoaxibexindexjinxlarynxlatexloxlynxmixonyxoryxoxparadoxpoxsaxsexsixtaxvortexwaxXanaxXerox
Some common nouns that start with 'i' are:ibexibisiceiconideaidentityidolimaginationimpinchinformationinkinninsightinspirationinventioninundationionirisironironyislandisolationissueisthmusitem
Some nouns that start with 'ca' are:cabcakeCadillaccameracanecapcapecarcarbinecarbohydratecarpcarriagecartcartilagecartoncartridgecagecampcanecarrotcasecastcatcavecavern
I will list some nouns that start with U:udderukuleleulcerultimatumunanimityumberumbrellaumpireuniformunanimityuniverseupdateupperUranusurchinurgencyurinalurnuseutopia
There are none. There might be some starting with ex, but a collective noun that starts with x doesn't exist.Collective nouns are an informal part of language. Any noun that suits the context can function as a collective noun; for example, a xenophobia of foreigners or a Xanax of xenophobes.
Some compound nouns that start with A are:about faceafterglowafternoonafterthoughtafterwardaftershockanthillankleboneapple pieapplesaucearrowrootashcan
Some non-count nouns that start with Z are:zealzealousnesszestzoologyzymurgy
Some nouns from A-Z are:atombeachcabbagedressEdwardfroggrapesheliumicejoykneelecturemonkeynounorangepartyqueenroostersteakTinaunguentvalleyWarsawxenonyogurtzone