The parts of speech for a noun are subject of a sentence or clause, and the object of a verb or a proposition. Examples:
Subject of a sentence: Your decision was a good one.
Subject of a clause: The merger, a decision made by the board, will be implemented by the end of the year.
Object of a verb: We made a decision to save our money and go next year.
Object of a preposition: We are satisfied with our decision.
The part of speech for "answer" is a noun.
The part of speech for "archaeologist" is a noun.
Permission is a noun.
Touchdown is a noun.
The part of speech for the word diplomacy is a noun.
A noun, specifically a proper noun.
The word speech is a noun.
There is only one part of speech in a noun--noun.
Noun
The part of speech for "lecturer" is a noun.
Noun is a noun.
noun