The word cognomination means a shared name or designation. There are a few synonyms that could be used in place of cognomination, such as co-nominate, joint appellation, or shared title. Other words that could be connected to cognomination include co-naming, naming in common, or sharing a designation. Whether used in a formal or informal setting, cognomination tends to describe something that is shared between two or more individuals or entities. It can also be used to describe the practice of giving things a shared or co-named title or designation, such as a joint project or collaboratively named product.