We can use the word more with some adjectives to compare two nouns or pronouns.
Field hockey is more interesting to watch than ice hockey.
I have more stamps than Stanley.
Tomatoes grow more in the summer than spring.
We can use the word most with some adjectives to compare more than two nouns or pronouns.
Diving may be the most difficult of all sports.
Working in construction is the most difficult in the hot summer.
I have the most stars in my bedroom.