There are eight different parts and each one has a specific role in the sentence. You can find that they are also called called grammar categories or word
classes.
NOUNS
Nota:
These name a person, a place, a thing, an idea, a living creature, a quality, or an action.
PRONOUNS
Nota:
They are used instead of a noun, to avoid repeating the noun.
VERBS
Nota:
They describe an action (doing something) or a state (being something).
ADJECTIVES
Nota:
They describe a noun. They tell you something about the noun.
ARTICLES
Nota:
They are used to introduce a noun.
ADVERBS
Nota:
These words usually describe a verb. They tell you how something is done. They may also tell you when or where something happened.
PREPOSITIONS
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They usually come before a noun, pronoun or noun phrase. They join the noun to some other parts of the sentence.
CONJUNCTIONS
Nota:
They join two words, phrases or sentences together.
INTERJECTIONS
Nota:
They often stand alone. Interjections are words which express emotion or surprise, and they are usually followed by exclamation marks.