Possible Clues:

• Words that sound the same, though with different meanings
• Common features of wordplay
• Words that sound the same but have different meanings
• Bare and bear, e.g
• Skate and skate? Oh m-my, son will go sprawling!
• "Two" and "too," for example
• Two words that have the same spelling but different meanings
• B, be, and bee, e.g.
• Words that sound the same as others but have different meanings
• Words which, though pronounced the same way, have different meanings