In English, we commonly make noun phrases in the form "X of Y" where we're describing that "X" is comprised of "Y" - pound of flesh, sack of meat, lump of coal, and so on. I think I understand the individual parts of speech involved:
- "X" and "Y" are nouns or noun phrases
- "of" is a preposition describing the relationship between "X" and "Y"
...and the overall result ("X of Y") is itself a noun phrase. I'm curious if there's an exact name for this particular type of noun phrase. My research has consisted of searching those parts of speech, searching similar phrases, and browsing Wikipedia articles related to those parts of speech.