Patronymics refers to a naming system where a person's surname is derived from their father's first name. However, there are different terms and synonyms for this naming convention. For instance, in some cultures, it is called a matronymic, which means the name is derived from the mother's first name. Another synonym for patronymics is filiation, which describes the relationship between a child and their parent. Similarly, cognominal refers to a name that is based on a particular characteristic or trait of an individual. Furthermore, some people refer to patronymics as last names, family names, or surnames. Overall, there are multiple synonyms for the term patronymics that have varying meanings and interpretations.