elephant, zebra, big
An elephant is bigger than a zebra.
slow, motorbike, plane
A motorbike is slower than a plane.
dog, horse, short
A dog is shorter than a horse.
grandma, mum, old
My grandma is older than my mum.
baby brother, me, young
My baby brother is younger than me.
bike, car, fast
A car is faster than a bike.
cat, cow, small
A cat is smaller than a cow.
giraffe, hippo, tall
A giraffe is taller than a hippo.