1. The comparative is used in English to compare differences between the two objects to which it modifies (larger, smaller, faster, taller). It is used in sentences where we compare two names, as follows: Name (subject) + verb + adjective in comparative degree + than + name (object). The second term of the comparison can be omitted if it is understood from the context
1.1. EXAMPLE: My house is larger than hers.
1.2. This box is smaller than the one I lost.
1.3. Your dog runs faster than Jim's dog.
1.4. The rock flew higher than the roof.
1.5. Jim and Jack are both my friends, but I like Jack better
2. The superlative is used to describe an object that is at the upper or lower end of a quality (the tallest, the smallest, the fastest, the highest). It is used in sentences in which we compare a subject with a group of objects, like here: Name (subject) + verb + the + adjective in superlative degree + name (object). The group with which the comparison is made can be omitted if it is understood from the context
2.1. EXAMPLE: My house is the largest one in our neighborhood.
2.2. This is the smallest box I've ever seen.
2.3. Your dog ran the fastest of any dog in the race.
2.4. We all threw our rocks at the same time. My rock flew the highest
