Eminent and imminent look similar, but they describe very different things.
Eminent refers to a person, or sometimes a thing, that is well known, respected, or distinguished. It is about status, reputation, or recognized excellence. You might write, The university invited an eminent historian to speak.
Imminent means something is about to happen, often very soon. It is about timing and nearness, not reputation. For example, Dark clouds suggested that a storm was imminent.
A simple way to remember the contrast is this: if you mean important or distinguished, choose eminent. If you mean close at hand or about to occur, choose imminent.
- Eminent: The award honored an eminent scientist.
- Imminent: Evacuation became urgent because flooding was imminent.
Even though the words sound alike, they are not interchangeable. One describes recognition, the other describes what is coming next.