Countable Nouns Ending in ON and Containing O
Browse 5,920 valid English countable nouns ending in ON and containing O, from Information, Person, Question, Action, Son, Organization and Education 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 A
24 words action
application
attention
administration
afternoon
addition
association
assumption
amazon
ambition
admission
acquisition
abortion
attraction
adoption
accommodation
addiction
appreciation
allocation
aaron
adaptation
affection
authorization
animation
Starts with B
24 words billion
button
bacon
balloon
beacon
babylon
battalion
baron
bourbon
boon
bison
beckon
bastion
baton
bellybutton
businessperson
burton
bandwagon
briton
bullion
bouillon
buffoon
backgammon
benediction
Starts with C
24 words common
communication
condition
connection
conversation
construction
commission
collection
consideration
competition
constitution
contribution
convention
conclusion
creation
combination
comparison
concentration
collaboration
confirmation
corporation
champion
civilization
compensation
Starts with D
24 words direction
discussion
decision
distribution
description
division
depression
determination
definition
discrimination
demonstration
duration
distinction
destination
dimension
dragon
declaration
dedication
demon
donation
devotion
detection
distraction
don
Starts with E
24 words education
election
expression
explanation
emotion
examination
expectation
exception
extension
evaluation
evolution
edition
exhibition
expansion
equation
explosion
execution
exploration
exploitation
emission
exemption
exclusion
elevation
extinction
Starts with F
24 words function
fashion
foundation
formation
fiction
frustration
fraction
fusion
friction
faction
formulation
federation
fascination
fluctuation
fixation
filtration
falcon
felon
fragmentation
fermentation
fabrication
facilitation
fortification
fanfiction
Starts with G
24 words generation
graduation
grandson
gallon
generalization
globalization
gratification
garrison
gestation
gibson
goon
gravitation
germination
glutton
godson
glorification
geolocation
gradation
gridiron
galleon
gibbon
gorgon
gesticulation
granulation
Starts with H
24 words horizon
hon
hesitation
humiliation
hospitalization
hallucination
honeymoon
hydration
heron
hackathon
harmonization
harpoon
hibernation
hydrocarbon
hexagon
habitation
huron
hybridization
halcyon
hyphenation
homogenization
half-moon
hellion
habituation
Starts with I
24 words information
institution
investigation
interaction
innovation
introduction
imagination
impression
inflation
interpretation
integration
intervention
instruction
identification
infection
intention
implication
invention
implementation
inspiration
isolation
invitation
icon
inclusion
Starts with J
24 words johnson
jackson
jurisdiction
justification
junction
jargon
juxtaposition
jubilation
jettison
jamon
jillion
jollification
jimson
jargonization
journalization
jeton
jetton
judication
jumpstation
jupon
jargoon
jobation
jugulation
jactitation
Starts with K
22 words klaxon
kazillion
kaon
kiloton
keratinization
keelson
kroon
klystron
karyon
kakiemon
kirkton
kamelaukion
krytron
kikumon
kitschification
keybutton
kyanization
katabothron
kirimon
kenotron
katavothron
krypterophaneron
Starts with L
24 words location
lesson
limitation
lemon
lion
liberation
litigation
legion
liaison
legalization
lotion
localization
logon
lesion
liquidation
lamentation
lexicon
lactation
lagoon
lubrication
laceration
liberalization
loon
liposuction
Starts with M
24 words million
mention
mission
moon
motion
motivation
medication
madison
modification
migration
meditation
manipulation
mansion
marathon
mediation
manifestation
mitigation
moderation
mutation
multiplication
melon
modernization
mason
misconception
Starts with N
24 words nation
negotiation
navigation
noon
notification
notion
nomination
nelson
notation
normalization
nylon
narration
neuron
neon
newton
neutron
naturalization
negation
napoleon
neurosurgeon
nationalization
neocon
non
nullification
Starts with O
24 words organization
operation
opinion
option
occasion
opposition
observation
occupation
orientation
obligation
onion
optimization
objection
oppression
obsession
omission
obstruction
offseason
ovulation
oxidation
orchestration
omicron
ordination
ovation
Starts with P
24 words person
position
production
population
protection
preparation
prison
presentation
passion
permission
promotion
profession
possession
pension
poison
participation
perception
prediction
publication
portion
provision
projection
proportion
pollution
Starts with Q
24 words question
qualification
quotation
quantification
quantization
quintillion
quadrillion
quaternion
quantitation
quadroon
quattuordecillion
quadrisection
quillon
quadruplication
quintuplication
quartation
quarrion
quindecagon
quercitron
quotition
quadripartition
quindecillion
quinquepartition
quizzification
Starts with R
24 words reason
region
religion
relation
representation
reaction
revolution
recognition
reflection
resolution
recommendation
registration
regulation
reputation
reception
reduction
reservation
recession
revision
restriction
recreation
rotation
rejection
rehabilitation
Starts with S
24 words son
situation
season
section
station
solution
session
selection
suggestion
satisfaction
subscription
separation
suspicion
sanction
speculation
succession
specification
submission
spoon
simulation
surgeon
suspension
simon
substitution
Starts with T
24 words television
tradition
transition
transaction
tension
translation
transformation
ton
trillion
transmission
tuition
taxation
temptation
termination
thompson
treason
transcription
telecommunication
teaspoon
tablespoon
tendon
tycoon
tampon
transgression
Starts with U
24 words union
utilization
unification
unison
unionization
urination
underrepresentation
usurpation
undulation
ultramarathon
upsilon
unction
underestimation
ulceration
underutilization
undervaluation
ubiquitination
unperson
upgradation
unsaturation
underreaction
universalization
underproduction
ululation
Starts with V
24 words vision
version
vacation
variation
violation
validation
verification
vibration
vaccination
visualization
valuation
vocation
vegetation
visitation
vexation
victimization
vindication
vernon
volition
virtualization
veneration
vocalization
vermilion
vacillation
Starts with W
24 words won
weapon
wilson
wagon
watermelon
wellington
williamson
workstation
wanton
wilton
weaponization
wonton
wavefunction
williston
whoreson
weatherization
walkathon
waitperson
waystation
woodpigeon
winterization
weatherperson
wigeon
wanion
Starts with X
7 words xenotransplantation
xoanon
xylon
xanthation
xiphiplastron
xiphodon
xeromyron
Starts with Y
4 words yacon
yaupon
yuppification
yohimbinization
Starts with Z
16 words zillion
zooplankton
zircon
zonation
zombification
zwitterion
zabuton
zoon
zygon
zacaton
zyzzogeton
zygion
zygopteron
zonoskeleton
zincification
zoopantheon