Meaning of 'Ro' and 'Aro'

• A type of Japanese poetry
• A famous opera singer
• Aromatic ring compound in chemistry (correct)
• The indigenous people of New Zealand

• The abbreviation for 'right order'
• A standard method used in robotics
• A unit of measurement for loudness (correct)
• A type of flower found in tropical regions

• In cultural studies to refer to a concept of love and respect (correct)
• In economics to describe a form of international trade agreement
• In fashion to denote a particular style of clothing
• In astrology to describe a specific zodiac sign