Alll of the following are considered parts of speech concept

- Nouns (e.g. dog, book)

- Pronouns (e.g. he, she, it)
- Verbs (e.g. run, jump)
- Adjectives (e.g. beautiful, tall)
- Adverbs (e.g. slowly, quickly)
- Prepositions (e.g. in, on, at)
- Conjunctions (e.g. and, but)
- Interjections (e.g. oh, wow)
Note: Some grammarians may include additional categories or variations, but these are the main concepts generally accepted as parts of speech in traditional grammar.

The parts of speech are the building blocks of language that categorize words based on their functions and relationships in a sentence. Here are the commonly recognized parts of speech:

1. Noun: A word that names a person, place, thing, or idea. Examples: dog, London, happiness.

2. Pronoun: A word that replaces a noun. Examples: he, she, it, they.

3. Adjective: A word that describes or modifies a noun. Examples: beautiful, tall, delicious.

4. Verb: A word that expresses an action, occurrence, or state of being. Examples: run, jump, is.

5. Adverb: A word that describes or modifies a verb, adjective, or adverb. Examples: quickly, very, often.

6. Preposition: A word that shows the relationship between a noun/pronoun and another word in the sentence. Examples: in, on, at.

7. Conjunction: A word that connects words, phrases, or clauses. Examples: and, but, or.

8. Interjection: A word or phrase used to express strong emotions or sudden reactions. Examples: wow, oh, oops.

These are the basic parts of speech, and understanding their roles can help in analyzing sentence structure and grammar.