You create the comparative form of an adjective or an adverb by placing
más (more) or menos (less) in front of it. In English the comparative is sometimes
formed by adding the ending -er or by using the word more (or less). Spanish always
uses the words more or less. Examples:
Este carro es más rápido que el otro. (This car is faster than the other one.)
Esta pintura es más verde que la primera. (This paint is greener than the first one.)
Este libro es más interesante que el otro. (This book is more interesting that the other.)
Ese vestido es menos atractivo. (That dress is less attractive.)
The comparative form of a noun is created by using the words mejor (better) and peor (worse).
Esto es mejor que eso. (This is better than that.)
Aquella es peor. (That one (over there) is worse.)
The Superlative form
You create the superlative form of an adjective by placing el/la más (the most) or el/la menos (the least)
in front of it. Here are some examples:
Este carro es el más rápido. (This car is the fastest one.)
Esta pintura es la más verde. (This paint is the greenest.)
Este libro es el más interesante. (This book is most interesting.)
Ese vestido es el menos atractivo. (That dress is least attractive one.)
The superlative form of a noun is created by using the words mejor (better) and peor (worse).
Este es el mejor. (This one is the best.)
Aquella es la peor. (That one (over there) is worst one.)