collaboration vs. quislingism
comfort vs. consolation
comfort vs. solace
comfort vs. puff
comfort vs. comforter
comfort vs. quilt
comfort vs. comfortableness
comfort vs. ease
comfort vs. console
comfort vs. soothe
calumny vs. defamation
calumniation vs. calumny
calumny vs. traducement
calumny vs. obloquy
concurrence vs. concurrency
concurrence vs. conjunction
coincidence vs. concurrence
consolation vs. solace
consolation vs. solacement
conduct vs. lead
conduct vs. direct
conduct vs. take
conduct vs. deal
cabalism vs. kabbalism
championship vs. patronage
championship vs. title
congregating vs. congregation
congregation vs. faithful
congregation vs. fold
convening vs. convention
convention vs. conventionality
convention vs. conventionalism
convention vs. pattern
civility vs. politeness
court vs. homage
court vs. courtyard
court vs. courtroom
court vs. lawcourt
court vs. judicature
court vs. romance
court vs. solicit
court vs. woo
consolidation vs. integration
consideration vs. thoughtfulness
considerateness vs. consideration
condition vs. consideration
circumstance vs. consideration
consideration vs. retainer
consultation vs. reference
consultation vs. interview
chanting vs. intonation
carrier vs. newsboy
carrier vs. toter
carrier vs. mailman
carrier vs. postman
cub vs. lad
cub vs. laddie
cub vs. sonny
cub vs. greenhorn
cub vs. rookie
cocci vs. coccus
crest vs. crown
crest vs. peak
crest vs. top
crest vs. tip
crest vs. summit
cap vs. crest
crossbreed vs. hybrid
crossbreed vs. hybridize
crossbreed vs. hybridise
crossbreed vs. interbreed
capsid vs. mirid
clostridia vs. clostridium
chlorophyl vs. chlorophyll
cryptomonad vs. cryptophyte
carageen vs. carrageen
carrageen vs. carragheen
coccidium vs. eimeria
chordamesoderm vs. chordomesoderm
cilium vs. lash
conceptus vs. embryo
craniate vs. vertebrate
cephalaspid vs. osteostracan
chimaera vs. chimera
cock vs. rooster
cock vs. hammer
cock vs. stopcock
cock vs. turncock
cock vs. tool
cock vs. strut
chatterer vs. cotinga
chatterer vs. magpie
chatterer vs. spouter
chatterer vs. prater
chatterbox vs. chatterer
chat vs. confabulation
chat vs. confab
chat vs. schmooze
chat vs. schmoose
chat vs. visit
cheewink vs. chewink
crow vs. vaporing
crow vs. gasconade
crow vs. triumph
crow vs. gloat
cacique vs. cazique
crawler vs. creeper
caiman vs. cayman
chamaeleon vs. chameleon
coachwhip vs. ocotillo
corythosaur vs. corythosaurus
ceratosaur vs. ceratosaurus
carcase vs. carcass
cockscomb vs. coxcomb
chigger vs. chigoe
cockateel vs. cockatiel
cuckoo vs. goose
cuckoo vs. jackass
cuckoo vs. twat
cuckoo vs. goof
cuckoo vs. goofball
cuckoo vs. fathead
caprimulgid vs. goatsucker
cob vs. hazelnut
cob vs. filbert
cob vs. cobnut
carapace vs. shell
carapace vs. cuticle
carapace vs. shield
coat vs. pelage
cake vs. coat
coat vs. surface
cuticle vs. epidermis
cow vs. overawe
calf vs. sura
calf vs. calfskin
cirrhus vs. cirrus
cnidarian vs. coelenterate
cestode vs. tapeworm
crawler vs. earthworm
crawler vs. lackey
crawler vs. sycophant
cowrie vs. cowry
cockle vs. knit
cockle vs. pucker
cockle vs. rumple
cockle vs. crumple
cockle vs. riffle
chiton vs. polyplacophore
clamshell vs. grapple
cuttle vs. cuttlefish
craw vs. crop
crop vs. harvest
crop vs. shortened
crop vs. graze
crop vs. work
crawfish vs. crayfish
crawdad vs. crawfish
crawdaddy vs. crawfish
crawfish vs. ecrevisse
crawfish vs. retreat
chunga vs. seriema
charger vs. courser
cur vs. mongrel
cur vs. mutt
cougar vs. puma
catamount vs. cougar
cougar vs. painter
cougar vs. panther
catamount vs. lynx
cat vs. guy
cat vs. hombre
chela vs. claw
claw vs. nipper
claw vs. pincer
claw vs. hook
caliculus vs. calyculus
calycle vs. calyculus
calyculus vs. epicalyx
cheetah vs. chetah
collembolan vs. springtail
cleg vs. horsefly
clegg vs. horsefly
cockroach vs. roach
cicada vs. cicala
caddisworm vs. strawworm
coney vs. rabbit
coney vs. cony
coney vs. hyrax
coney vs. dassie
coney vs. das
cony vs. rabbit
cony vs. pika
chinchillon vs. viscacha
coypu vs. nutria
chigetai vs. dziggetai
carthorse vs. drayhorse
cattle vs. cows