What part of speech would the phrase soccer practice be?

The phrase "soccer practice" is a noun phrase. It functions as a single unit within a sentence and names a specific event or activity involving the sport of soccer. Specifically, it is a compound noun phrase consisting of the noun "soccer" and the noun "practice."

In general, a noun phrase acts as a grammatical unit that names a person, place, thing, idea, or event. It can function as the subject, object, or any other noun-like role in a sentence.