older
The boy is older than his grandfather
bigger
The dog is bigger than the cat
youngest
Tim is the youngest boy
younger
The little girl is younger than her grandmother
shortest
The green pencil is the shortest pencil.
slowest
The car is the slowest vehicle
longest
The yellow pencil is the longest pencil
oldest
Brad is the oldest boy
smallest
The ant is the smallest animal.
longer
The green snake is longer than the yellow snake
slower
The turtle is slower than the dog
faster
The rabbit is faster than the turtle
smaller
The mouse is smaller than the lion.
biggest
The elephant is the biggest animal.
fastest
The plane is the fastest vehicle