The name of FeN is Iron Nitride.
In naming ionic compounds, the cation comes first followed by the anion. In this case, Fe represents iron, and since it is a metal, it is named simply as iron without the word ‘ion.’ The N represents nitride, which is the anion derived from nitrogen. When naming the anion, the suffix ‘ide’ is used as it is a simple anion derived from a non-metal. Therefore, when you combine them, you get Iron Nitride.