Related Clues:

• Gerund, for example
• Subject of a sentence
• Proper subject, perhaps
• Heads or tails, e.g.
• 'Adjective' or 'adverb,' e.g.
• Plus or minus
• Subject, often
• Morning or evening, e.g.
• Pen or pencil, e.g.
• Sink or swim, perhaps
• Pluralizable word
• What an adjective modifies
• Proper word
• Word class
• A proper one is capitalized