Here's why:
* Verbs express action or state of being: They describe what the subject is doing or what condition they are in.
* Case indicates grammatical function: Cases (nominative, accusative, genitive, etc.) are assigned to nouns and pronouns to show their role in the sentence (subject, direct object, possession, etc.).
Example:
* "Puella currit." (The girl runs.)
* "Puella" is the subject and is in the nominative case.
* "Currit" is the verb and is not assigned a case.
To determine the case of a noun or pronoun in a Latin sentence, you need to consider its function:
* Subject: Nominative case
* Direct object: Accusative case
* Object of a preposition: Various cases depending on the preposition (e.g., genitive with "de", ablative with "cum").
Remember: Verbs are not declined like nouns. They are conjugated to show tense, mood, and person/number.