The Guide:

In English grammar, a comparison is the structure used to evaluate the similarities and differences between two or more people, objects, or actions. It allows you to express whether something has more, less, or an equal amount of a specific quality. The Three Main Degrees of Comparison

Grammatical comparisons are broken down into three fundamental levels:

Positive Degree: This describes a quality without making a direct comparison to something else (e.g., “The car is fast”).

Comparative Degree: This directly compares two things to show which one has more or less of a quality. It uses the suffix -er or the modifier more/less followed by than (e.g., “The car is faster than the bus”).

Superlative Degree: This compares three or more things to show which one has the highest or lowest level of a quality. It uses the suffix -est or the modifier most/least (e.g., “This is the fastest car in the world”). Advanced Comparison Structures

Beyond standard modifiers, English features specific patterns to highlight relationships between elements: The…the… comparatives – English In A Minute