Adjectives add detail and description to a sentence. An adjective is used to quantify, identify or modify a noun by describing a characteristic of that noun. An adjective can describe an aspect of a noun's appearance, such as color, as in yellow, or size, as in big. It can also describe a mood such as miserable or joyful or a quantity as in "twenty students in the class".
There are different types of adjectives. A positive adjective is the simplest form. It does not express an increase or decrease in the original quality or compare the noun to something else, for example "a happy man." A comparative adjective does describe an increase or decrease in the characteristic: "the happier man." To express the greatest increase or decrease of the quality the superlative adjective is used, for example, "the happiest man."
An adverb is a word that modifies a verb, or action. It describes how or when an action took place. Adverbs add more information and help a reader to build a clear picture of what the writer is trying to describe. This type of word often ends in "ly."
Adverbs are used to describe how an action happened: "noisily," "quickly" or "messily," for example. Adverbs also describe where an action happens, for example "inside," "everywhere" or "abroad." They can describe when an action happened: "recently" or "often." Use adverbs to describe how often an action happens, for example "daily" or "frequently." Adverbs are also used to describe to what degree something happens; you could use "very" or "just," for example. You can also use an adverb to describe how likely it is that an action will occur; it may be "likely" to happen, for example.