However, the individual words that make up a sentence can be many different parts of speech.
For example, in the sentence "The cat sat on the mat," the words are:
* The: A definite article (a type of determiner)
* Cat: A noun
* Sat: A verb
* On: A preposition
* The: A definite article (a type of determiner)
* Mat: A noun
Let me know if you want to know the part of speech for a specific word or set of words!