* red word: This acts as a noun phrase. It describes a word that is red in color.
* during: This is a preposition, indicating a time period in which something happens.
Therefore, "red word" is a noun phrase, and "during" is a preposition.
It's important to note that the phrase as a whole doesn't form a grammatically complete sentence on its own. You would need to add more information, such as:
* "The red word appeared during the presentation."
* "We saw a red word during the game."
These examples provide context and make the phrase grammatically meaningful.