Here's why:
* Parts of speech describe the grammatical function of words (e.g., noun, verb, adjective, adverb).
* Verb tenses indicate the time of an action or state of being.
The past indicative tense describes an action or state that happened in the past. It's often formed by adding "-ed" to the base form of the verb (e.g., walked, talked, played).
Example:
* I walked to the store yesterday. ("walked" is the past indicative of the verb "walk")
Let me know if you have any other questions!