Here's what rhymes with categorization.
                        
                        
                    
                                nation  station  cessation  aeration  elation  inflation  innovation  salvation  sensation  taxation  fixation  vacation  aviation  causation  narration  vocation  citation  gestation  innervation  iteration  oration  sedation  summation  urbanization  ablation  deflation  vexation  information  operation  relation  situation  creation  formation  association  duration  foundation  location  observation  publication  separation  variation  activation  cultivation  deviation  elevation  inspiration  invitation  isolation  liberation  organisation  rotation  violation  aspiration  characterization  dissertation  imitation  initiation  irrigation  irritation  notation  quotation  saturation  temptation  termination  vibration  accusation  affiliation  affirmation  annexation  authorization  colonization  derivation  dissipation  evaporation  federation  insulation  ionization  modernization  negation  oscillation  polarization  realisation  starvation  veneration  aberration  adoration  bifurcation  capitalization  castration  damnation  divination  donation  fertilization  hydration  inhalation  invocation  perforation  ulceration  visitation  actualization  aggravation  alleviation  education  organization  application  consideration  generation  civilization  conversation  cooperation  corporation  evaluation  occupation  participation  radiation  translation  adaptation  admiration  appreciation  compensation  conservation  correlation  declaration  illustration  immigration  indication  limitation  migration  modification  motivation  obligation  preservation  realization  restoration  revelation  accommodation  agitation  allocation  alteration  anticipation  assimilation  collaboration  confirmation  decoration  degradation  delegation  designation  domination  estimation  excitation  hesitation  inflammation  installation  navigation  negotiation  oxidation  penetration  plantation  proliferation  relaxation  reservation  respiration  utilization  valuation  vegetation  aggregation  animation  annihilation  approbation  assassination  calibration  certification  civilisation  condensation  consolation  dedication  deprivation  desolation  desperation  dilatation  dislocation  dissociation  distillation  elaboration  emigration  exaggeration  excavation  expiration  fascination  filtration  generalization  globalization  graduation  gratification  habitation  irradiation  liberalization  litigation  localization  maturation  mediation  mobilization  moderation  mutation  optimization  probation  ratification  reformation  signification  socialization  toleration  validation  abbreviation  affectation  allegation  appellation  augmentation  automation  cancellation  capitulation  commendation  conciliation  confederation  conformation  connotation  consummation  coronation  demarcation  devastation  dispensation  elucidation  enumeration  escalation  exaltation  germination  gravitation  inactivation  intimation  intonation  liquidation  ovulation  perspiration  perturbation  punctuation  rationalization  recitation  renovation  reparation  revocation  sanitation  stagnation  standardization  usurpation  utilisation  vaccination  population  administration  combination  examination  circulation  classification  determination  imagination  integration  legislation  preparation  presentation  regulation  calculation  configuration  demonstration  differentiation  expectation  exploration  justification  orientation  acceleration  alienation  arbitration  celebration  computation  condemnation  confrontation  congregation  consolidation  consultation  contemplation  continuation  deformation  degeneration  depreciation  destination  documentation  elimination  emancipation  frustration  illumination  implication  inclination  indignation  manifestation  medication  meditation  nomination  proclamation  propagation  qualification  recreation  registration  resignation  segregation  simulation  speculation  ventilation  amplification  articulation  attenuation  compilation  complication  deliberation  dissemination  evacuation  fabrication  fermentation  importation  incarnation  incubation  infiltration  modulation  notification  ordination  privatization  retardation  sophistication  specialization  stabilization  adjudication  alternation  amalgamation  amputation  calcification  confiscation  conflagration  consecration  constellation  consternation  constipation  crystallization  culmination  dehydration  delineation  denunciation  deportation  deputation  devaluation  elongation  emulation  eradication  exhortation  exportation  fibrillation  fluctuation  hybridization  immunization  imputation  inauguration  interpolation  magnetization  masturbation  nationalization  normalization  polymerization  prolongation  provocation  reclamation  refrigeration  refutation  regurgitation  relocation  renunciation  resuscitation  sedimentation  segmentation  sterilization  subjugation  vindication  communication  concentration  explanation  interpretation  investigation  reputation  transformation  accumulation  discrimination  exploitation  formulation  stimulation  appropriation  approximation  contamination  coordination  deterioration  incorporation  manipulation  precipitation  recommendation  reconciliation  regeneration  specification  clarification  coagulation  denomination  fragmentation  humiliation  intoxication  multiplication  preoccupation  pronunciation  purification  remuneration  reorganization  replication  retaliation  stratification  unification  verification  argumentation  authentication  centralization  democratization  deregulation  diversification  duplication  exclamation  extermination  hospitalization  implantation  inoculation  interrogation  intimidation  magnification  menstruation  mortification  ornamentation  personification  quantification  repudiation  stipulation  supplementation  synchronization  visualization  identification  representation  implementation  transportation  rehabilitation  disintegration  experimentation  industrialization  subordination  conceptualization  decentralization  simplification  transplantation  instrumentation  intensification  excommunication  misrepresentation  Words that almost rhyme with categorization
haven  hasten  evasion  invasion  basin  equation  occasion  persuasion  shaken  shaman  taken  pagan  bacon  laden  maiden  layman  laymen  mistaken  patron  awaken  salesman  contagion  straighten  statesman  forsaken  overtaken  undertaken  tradesmen