In grammar the comparative is the form of an adjective or adverb which denotes the degree or grade by which a person, thing, or other entity has a property or quality greater or less in extent than that of another. It is in fact, one of the two inflections, together with the superlative, an adjective or adverb can have. Grammar is the study of the rules governing the use of a language. ... An adjective is a part of speech which modifies a noun, usually making its meaning more specific. ... An adverb is a part of speech that usually serves to modify verbs, adjectives, other adverbs, clauses, and sentences. ... Inflection or inflexion refers to a modification or marking of a word (or more precisely lexeme) so that it reflects grammatical (i. ... In grammar the superlative of an adjective or adverb indicates that an entity transcends at least two other entities in some way. ...

The structure of a comparative consists normally of the positive form of the adjective or adverb, plus the suffix -er, or (especially in the case of longer words) the modifier "more" (or "less") before the adjective or adverb. The form is usually completed by "than" and the noun which is being compared, e.g. "he is taller than his father is", or "the village is less picturesque than the town near by is". In common usage positive is sometimes used in affirmation, as a synonym for yes or to express certainty. In mathematics, a number is called positive if it is bigger than zero. ... Suffix has meanings in linguistics and nomenclature. ... A noun, or noun substantive, is a word or phrase that refers to a person, place, thing, event, substance or quality. ...

Those who pay heed to usage prescription frequently jar at the null comparative, a comparative in which the starting point for comparison is not stated. These comparisons are frequently found in advertising; for example, in assertions such as "Our burgers have more flavor!" (More flavor than what?), "Our picture tube is sharper!" (Sharper than what?), "50% more!" (50% more than what, exactly?), etc. Similar problems attend slogans such as "100% pure" (pure what, again?). In some cases it is easy to infer what the missing element in a null comparative is; in other cases the speaker/writer may have been deliberately vague in this regard. In linguistics, prescription is the laying down or prescribing of normative rules for a language. ... Generally speaking, advertising is the paid promotion of goods, services, companies and ideas by an identified sponsor. ... A slogan is a memorable phrase used in political or commercial context as a repetitive expression of an idea or purpose. ...