Answer:
dependent clause
Step-by-step explanation:
A clause is a group of words that includes a subject and a verb and can express a complete thought. It can be either independent or dependent.
On the other hand, a phrase is a group of words that lacks a subject, verb, or both, and does not express a complete thought.
In the phrase "when I got home," the word "when" is a subordinating conjunction that introduces a dependent clause. The dependent clause "I got home" includes the subject "I" and the verb "got," and it expresses a complete thought.