blackbird vs. ousel
blackcap vs. pewit
blackcap vs. thimbleberry
broadbill vs. shoveler
broadbill vs. shoveller
broadbill vs. scaup
bluebill vs. broadbill
boatbill vs. broadbill
babbler vs. cackler
babbler vs. chatterer
bobolink vs. ricebird
bowerbird vs. catbird
blindworm vs. caecilian
blindworm vs. slowworm
barosaur vs. barosaurus
beak vs. hooter
beak vs. pick
biddy vs. chick
biddy vs. hen
bobwhite vs. partridge
budgerigar vs. lovebird
budgereegah vs. lovebird
budgerygah vs. lovebird
budgie vs. lovebird
baldhead vs. baldpate
baldpate vs. baldy
bufflehead vs. dipper
butterball vs. dipper
butterball vs. fatty
butterball vs. fatso
bullbat vs. nighthawk
brant vs. brent
barnacle vs. cirriped
barnacle vs. cirripede
barb vs. shot
barb vs. jibe
barb vs. gibe
barb vs. slam
barb vs. shaft
barb vs. dig
buck vs. horse
buck vs. sawhorse
buck vs. sawbuck
buck vs. clam
buck vs. dollar
buck vs. jerk
buck vs. shoot
bristle vs. uprise
borer vs. woodborer
bloodsucker vs. hirudinean
bloodsucker vs. leech
beard vs. byssus
beard vs. whiskers
brit vs. britt
bonxie vs. skua
booby vs. dummy
booby vs. dumbbell
booby vs. pinhead
booby vs. dope
boob vs. booby
blackfish vs. tautog
beluga vs. hausen
bloodhound vs. sleuthhound
bitch vs. kick
backbite vs. bitch
bitch vs. crab
barker vs. pooch
boxer vs. pugilist
bagger vs. boxer
boxer vs. packer
bear vs. wear
bear vs. birth
bear vs. have
bear vs. deliver
bear vs. carry
bear vs. support
bear vs. yield
bear vs. hold
balancer vs. halter
bearcat vs. binturong
belly vs. paunch
belly vs. stomach
bluebottle vs. cornflower
bumblebee vs. humblebee
bedbug vs. chinch
booklouse vs. deathwatch
beaver vs. castor
baranduki vs. baronduki
baronduki vs. barunduki
baronduki vs. burunduki
bangtail vs. racehorse
beefalo vs. cattalo
bullock vs. steer
beef vs. kick
beef vs. boeuf
beef vs. crab
banteng vs. banting
banteng vs. tsine
babiroussa vs. babirusa
babirusa vs. babirussa
bushbuck vs. guib
broadtail vs. caracul
broadtail vs. karakul
bighorn vs. cimarron
baton vs. billy
billy vs. truncheon
billy vs. nightstick
billy vs. billystick
badger vs. tease
branchia vs. gill
barracouta vs. snoek
bushbaby vs. galago
bassarisk vs. ringtail
burbot vs. eelpout
burbot vs. ling
burbot vs. cusk
brisling vs. sprat
billfish vs. needlefish
billfish vs. saury
billfish vs. gar
barbel vs. feeler
blanquillo vs. tilefish
butterfish vs. stromateid
bergall vs. cunner
bowfin vs. dogfish
boxfish vs. trunkfish
blowfish vs. puffer
branch vs. subdivision
branch vs. offset
branch vs. outgrowth
branch vs. offshoot
branch vs. leg
branch vs. fork
branch vs. ramify
bacteriacide vs. bactericide
bower vs. embower
backbone vs. spine
backbone vs. grit
backbone vs. guts
backbone vs. moxie
backbone vs. sand
backbone vs. gumption
backdrop vs. background
backcloth vs. backdrop
background vs. desktop
background vs. ground
background vs. setting
background vs. scope
background vs. downplay
bond vs. hamper
bond vs. shackle
bond vs. trammel
bail vs. bond
bond vs. stick
bond vs. tie
bind vs. bond
backpack vs. knapsack
backpack vs. packsack
backpack vs. rucksack
backpack vs. haversack
backpack vs. pack
baffle vs. regulate
baffle vs. spoil
ballistocardiograph vs. cardiograph
balloon vs. billow
balloon vs. inflate
banister vs. bannister
balustrade vs. bannister
balusters vs. bannister
bannister vs. handrail
barricade vs. roadblock
barrier vs. roadblock
ballpark vs. park
baggage vs. luggage
banian vs. banyan
barrow vs. wheelbarrow
barrow vs. tumulus
barrow vs. barrowful
bagpipe vs. pipe
ballpen vs. ballpoint
Biro vs. ballpoint
barbecue vs. barbeque
bait vs. lure
bait vs. decoy
bait vs. hook
bait vs. rally
bakery vs. bakeshop
bakehouse vs. bakery
barbacan vs. barbican
barbital vs. veronal
barbital vs. barbitone
barbital vs. diethylmalonylurea
band vs. banding
band vs. stripe
band vs. ring
band vs. isthmus
band vs. circle
balance vs. equalizer