Part of Speech (one of the grammatical groups, such as noun, verb and adjective, into which words are divided depending on their use)

: : Noun - a word that refers to a person, place, thing, event, substance or quality
: : Article - any of the English words 'a', 'an' and 'the' or words in other languages that do the same job as these
: : Adjective - a word that describes a noun or pronoun: 'big', 'boring', 'purple', 'quick' and 'obvious' are all adjectives
          : : Degrees of Comparison (Adjectives)
: : Adverb - a word which describes or gives more information about a verb, adjective, adverb or phrase
          : : Degrees of Comparison (Adverbs)
: : Pronoun - a word which is used instead of a noun or a noun phrase
: : Verb - a word or phrase that describes an action, condition or experience.

: : Verb Tense - A verb tense shows when an action or state happens (past, present or future). It also indicates whether the action is ongoing or complete. There are 12 (basic) verb tenses in English. The name of a tense is not always a guide to when the action happens. The Present Continuous Tense, for example, can be used to talk about the present or the future.