Defination of Parts of Speech

• ADJECTIVE - modifies a noun.
  Examples: yellow, pretty, useful
  
  Adjectives have three degrees: Positive, Comparative, and Superlative.
  Example: old, older, oldest
  
• ARTICLE - specifies whether the noun is specific or a member of a class. The definite article "the" refers to specific objects. The indefinite articles "a", and "an" refer to an unspecified member of a class. The article "a" is used before a word starting with a consonant sound and "an" is used before a word starting with a vowel sound.
  Examples: a, an, the
  
• ADVERB - modifies a verb or an adjective. Many adverbs have the suffix -ly.
  Examples: very, extremely, carefully
  
• CONJUNCTION - joins components of a sentence or phrase. Coordinating conjunctions join clauses which are equally important. A subordinating conjunction joins a dependent clause to a main clause. Some conjunctions occur in pairs, e.g., neither ... nor, either ... or.
  Examples: and, but, or
  
• INTERJECTION - is used for exclamations.
  Examples: Oh!, Aha!
  
• NOUN - names an object or action. Common nouns refer to ordinary things. Proper nouns are usually capitalized and refer to persons, specific things or specific places.
  Examples: mouse, fire, Michael
  
• PREPOSITION - indicates relationship or relative position of objects.
  Examples: in, about, toward
  
• PRONOUN - is used in place of a noun. Personal pronouns are used to refer to persons. Interrogative pronouns introduce questions. Demonstrative pronouns refer to a previously mentioned object or objects. Relative pronouns introduce clauses.
  Examples: he, this
  
• VERB - specifies an action or links the subject to a complement. The tense of a verb indicates the time when the action happened, e.g., past, present, of future.
  Examples: take, is, go, fire