Theory:

Antonyms from the lesson "When the Trees Walked".
 
Words
Opposites
Nearby
Far away
AlwaysNever
JoinedSeparated
BuiltDemolished
BroadNarrow
ComesGoes
StillMoving
SmallBig
LifeDeath
SoldBought
LongShort
LightDark
SoonLate
HappySad
IncludingExcluding
SlimFat
ImproveDeteriorate
DryWet
NewOld
OverUnder
WhisperedShouted
TrueFalse