The word ‘mother’ is a common noun. Common nouns refer to general items, people, or concepts, and they are not specific in nature. In contrast, proper nouns denote specific names of people, places, or organizations and are usually capitalized.
For example, when we refer to ‘mother,’ we are talking about any mother, not a specific one. However, if we were to say ‘Mother Teresa,’ we are using a proper noun because it identifies a particular individual. In summary, ‘mother’ by itself is a common noun, while specific names or titles of mothers would be considered proper nouns.