Countable Nouns Starting with CO and Containing UM

Browse 90 valid English countable nouns starting with CO and containing UM, from Consumer, Costume, Consortium, Columnist, Continuum, Condominium and Conundrum to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with COA
2 words
coagulum
coadjument
Starts with COC5 words
cocoplum
cockalorum
coccidium
coccogonium
cochlospermum
Starts with COD
2 words
codium
codiaeum
Starts with COE9 words
coenobium
coenaculum
coenosteum
coenoecium
coelarium
coeloglossum
coenocentrum
coelastrum
coenanthium
Starts with COG
1 words
cognitum
Starts with COL24 words
columnist
colosseum
coliseum
colloquium
columbine
columbian
columbarium
collegium
columella
collum
colchicum
colluvium
columbite
collyrium
columniation
colletotrichum
columbary
columbid
colorum
collectivum
collectarium
columnea
columbate
columel
Starts with COM3 words
compendium
combretum
compluvium
Starts with CON22 words
consumer
consortium
continuum
condominium
conundrum
consumable
consummation
consumerist
consumptive
contumely
conservatorium
conium
contumacy
conidium
consummator
conarium
contumacity
contagium
conalbumin
consumptivity
contumax
connumeration
Starts with COR8 words
corundum
corium
corrigendum
corynebacterium
corallum
coremium
corniculum
cormidium
Starts with COS4 words
costume
costumer
costumery
costumier
Starts with COU3 words
counterargument
coumarin
coumarone

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