Noun - word that can be used to refer to a person, place, thing, quality, or action; can be subject or object of the sentence
Ex. dog, group, happiness, UNESCO
Verb- a content word that denotes an action, occurrence, or state of existence; the word class that serves as the predicate of a sentence
Ex. Do, be walk, shall
Adjectives – a word that expresses an attribute of something; the word class that qualifies nouns
Ex. Sad, green, asleep, burn
Adverb- the word class that qualifies verbs or clauses; a word that modifies something other than a noun
Ex. Well, later, near, however
Pronoun - a function word that is used in place of a noun or noun phrase
Ex. You, yourself, one, anything
Article - a determiner that may indicate the specificity of reference of a noun phrase
Ex. A, the
Preposition - a function word that combines with a noun or pronoun or noun phrase to form a prepositional phrase that can have an adverbial or adjectival relation to some other word
Ex. On, of, across, like
Conjunction - an uninflected function word that serves to conjoin words or phrases or clauses or sentences
Ex. And, or, since , if
Interjection- an abrupt emphatic exclamation expressing emotion
Ex. Oh!, Alas!, No!