These are currently all the options for the second word in a horse’s name.
A:
Ace
Angel
Anthem
Aura
B:
Beam
Bean
Beat
Beauty
Bee
Belle
Berry
Bird
Biscuit
Blaze
Blood
Blossom
Bolt
Born
Bow
Boy
Breeze
Brother
Buddy
Bullet
C:
Cake
Candy
Caramel
Caster
Champion
Chance
Charm
Chaser
Cherry
Chief
Child
Chip
Chunk
Clash
Cloud
Clover
Comet
Cookie
Crasher
Crescent
Crown
Crush
Cry
Crystal
Cup
D:
Dale
Dancer
Dare
Darling
Dash
Dawn
Desire
Destiny
Dew
Diamond
Disco
Dollar
Dove
Dragon
Dream
Dreamer
Drop
Dusk
Dust
E:
Eagle
Echo
Effect
Escape
Eye
F:
Faith
Fall
Father
Feather
Fighter
Fire
Flame
Flash
Flower
Fly
Flyer
Force
Fortune
Free
Friend
G:
Galaxy
Gaze
Gazer
Ghost
Gift
Girl
Glimmer
Glory
Guardian
H:
Harmony
Hawk
Hazel
Heart
Hero
Hill
Hollow
Honey
Hoof
Hope
Horse
Hunter
Hurricane
I:
Ice
J:
Jewel
Joy
Jumper
K:
Keeper
Kid
King
Kiss
Knight
L:
Lady
Leaf
Light
Lily
Lime
Lion
Lord
Love
Lucky
M:
Madness
Magic
Mane
Maniac
Mask
Master
Meadow
Melody
Mint
Mirror
Mist
Monster
Moon
Mother
Mountain
Mystery
N:
Ninja
Nova
O:
Ocean
Orange
Orb
P:
Peak
Pearl
Pepper
Petal
Phantom
Pie
Pirate
Pixel
Play
Pop
Potential
Power
Prince
Princess
Promise
Pumpkin
Q:
Queen
R:
Rabbit
Racer
Rain
Rainbow
Raspberry
Rebel
Rich
Rider
River
Rocket
Rose
Royal
Ruby
Runner
S:
Scout
Secret
Shade
Shadow
Shine
Shout
Shy
Singer
Sister
Smash
Snap
Solid
Solo
Song
Soul
Spark
Sparkle
Spell
Spice
Spider
Spirit
Splash
Spot
Star
Stone
Storm
Strawberry
Surfer
Surprise
T:
Tail
Tea
Tear
Time
Top
Torch
Tornado
Trouble
Twilight
Twin
V:
Vanilla
Velvet
W:
Walker
Warrior
Watcher
Water
Way
Weaver
Whisper
Willow
Wind
Wings
Wink
Winner
Wish