Gender.

Boy-Girl
Beau-Belle
Husband - Wife
King - Queen
Bachelor - maid
Boar- sow
Bridegroom-bride
Brother-sister
Ox
duck
Cock
Colt
Drake
Dog
Drone
Fox
Hero
Tailor
Author
Giant
Heir
Lion
Actor
Poter
Doctor
Hunter
Emperor
Master
Brother -in-law
Father-in-law
God-father
Gentleman
Billy-goat
Bull-calf
Cock-sparrow
He-goat
He

Conjunction of verb

Am, is  -was, were-been
Arise- arose- arisen
Bear- bore- born
Become - became- become
Begin - began- begun
Beat- beat - beaten
Bite- bit-
Blow
Break
Choose
Come
Dig
Draw
Drink
Fall
Flight
Fly
Forgive
Forget
Get
Know
Lie
Make
Ring
See
Sit
Sing
Spring
Shoot
Steal
Swim
Through
Win
Write
Cast
Hit
Cut
Let
Put
Telecast