adjective
Definition: Relating to or based on comparison, often used to describe the degree of an adjective or adverb that shows a difference in quality or quantity.
Example: In grammar, the word 'better' is a comparative form of 'good'.
noun
Definition: A form of an adjective or adverb that compares two things, showing that one has more of a quality than the other.
Example: In English, the comparative of 'big' is 'bigger'.