Parts of Speech

A category to which a word is assigned in accordance with its syntactic functions. In English the main parts of speech are noun, pronoun, adjective, verb, adverb, preposition, conjunction, and interjection.

1.VERB shows an action (physical or mental) or state of being of a subject in a sentence. It is the most important part of speech because verb is one of the main parts of a sentence. The verb signals an action, occurrence, or state of being.
The basic form of a verb is infinitive.

2. NOUNS name persons, places, objects, feelings or events.

Read the full article here.

3. ADJECTIVE modifies a noun or pronoun. It may describe, identify or quantify a noun or pronoun.

4. ADVERB modifies an adjective, a verb, or another adverb. An adverb indicates manner (how?), time (when?), place (where?), or degree (to what extent?)

5. PRONOUNS take the place of nouns.

6. PREPOSITION is a word which shows relationships among other words in the sentence. It links nouns, pronouns and phrases to other words in a sentence.

7. CONJUNCTION links words, phrases and clauses.

8. INTERJECTION is a word added to sentence to communicate emotion.