which might be a subheading of the heading nouns? parts of speech common nouns

which might be a subheading of the heading nouns? parts of speech common nouns
Answer
Brief Explanations:
Nouns are a part of speech. "Common Nouns" is a specific type within the category of nouns, so it can be a sub - heading under "Nouns". "Parts of Speech" is a broader category that includes nouns, so it cannot be a sub - heading of "Nouns".
Answer:
Common Nouns