Compare them using the adjective YOUNG
My mom is younger than my grandma
Compare them using the adjective TALL
The boy is taller than the girl.
Compare them using the adjective FAT
The girl is fatter than the boy.
Compare them using the adjective BIG (Apartment/House)
An apartment is higher than the house
Compare them using the adjective THIN
The boy is thinner than the girl.
Compare them using the adjective STRONG
The boy on the right is stronger than the boy on the right.
Compare them using the adjective SMALL
The car is smaller than the bus.
Compare them using the adjective OLD
My grandma is older than my mom
Compare them using the adjective SMALL
The mouse is smaller than the elephant.
Compare them using the adjective BIG
The lion is bigger than the monkey.
Compare them using the adjective BIG
The giraffe is bigger than the lion.