That rose stem is thin
That rose stem is thinner (than)/The rose stem is the thinnest.
The tail of the iguana is very long.
The iguana's tail is very long
What is an abstract noun?
Something that we can't use our 5 senses with but is used as a noun
The running horses trampled the flowers in the field.
The RUNNING horses trampled the flowers in the field.
The cat ran after the flying moth.
The cat ran after the FLYING moth.
Smoke was coming from the engine of the car
Smoke was coming from the car's engine.
She swam away from the annoying boy.
She swam away from the ANNOYING boy.
The actress is famous for her laugh.
The actress is more famous for her laugh/The actress is the most famous for her laugh.
Jonathan sets the table for dinner.
Change the verb tenses
She put the sleeping baby in the crib.
She put the SLEEPING baby in the crib.