Proper nouns are words that refer to specific people, places, or things. They are always capitalized and are usually the names of people, places, organizations, and sometimes products. The crossword solutions for the term 'proper nouns' are 'names, ' which are a type of proper noun. Names are typically used to refer to individuals, such as people, animals, and even fictional characters. They can also be used to refer to places, organizations, and products.