I was remembering what I was learn in my schools.
All the parts detailed before are important to build an excellent speech.
Examples,
Nouns: Computer, Broom, Floor
Pronouns: I, you, he, she, it, they, His, Her, Your, Its
Adverbs: Always, some, usually.
Adjectives: Big, small, large, short, black, white, fast, slow.
Verbs: Make, dance, try, write, run
conjunctions: and, for,but