Superlative:
1)Russia is the biggest country in the world
2)Nile is the longest river in Africa
3)Mercury is the smallest planet in the Solar System
4)The most beautiful color is blue
5)The most interesting fantasy book is Harry Potter

Comparative:
1)9 is bigger than 5
2) France is smaller than the USA
3)A textbook is heavier than a copybook
4)Box is more dangerous than football
5) Maths is more difficult than Geography