coolness vs. imperturbableness
compulsiveness vs. compulsivity
companionability vs. companionableness
contentiousness vs. quarrelsomeness
condescendingness vs. condescension
condescension vs. superciliousness
condescension vs. disdainfulness
capriciousness vs. whimsicality
capriciousness vs. unpredictability
carefreeness vs. lightsomeness
closeness vs. parsimoniousness
conscientiousness vs. painstakingness
congeniality vs. congenialness
curvaceousness vs. shapeliness
curvaceousness vs. voluptuousness
contemplativeness vs. pensiveness
contemplativeness vs. meditativeness
combustibility vs. combustibleness
correspondence vs. parallelism
commensurateness vs. correspondence
correspondence vs. proportionateness
changeability vs. changeableness
commutability vs. transmutability
commutability vs. replaceability
commutability vs. substitutability
changelessness vs. unchangingness
commonness vs. commonplaceness
curiousness vs. inquisitiveness
comprehensibility vs. understandability
compassion vs. compassionateness
circumspection vs. discreetness