Solutions Bonus has 6 entries with similar clues

• 4-letter words
• twinBaby bonus, maybe?
• 6-letter words
• encoreConcert's bonus song
• 8-letter words
• dividendBonus share of a surplus
• windfallUnexpected bonus/fortune
• 9-letter words
• lagniappeSomething given as a bonus or gratuity
• 12-letter words
• danger-moneyBonus payment for perilous work