What is night vs goodnight?

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Night vs. Goodnight

While both "night" and "goodnight" relate to the period of darkness, they serve different purposes. "Night" is a general term referring to the time between sunset and sunrise. You might say, "I enjoy reading at night." This is a simple statement of fact. See more about it here.

"Goodnight", on the other hand, is a farewell greeting used when someone is going to bed or departing for the night. It's a polite way to say goodbye. Saying "Goodnight" implies that you're not going to see the person again until the next day or a later time. Further information available here.

In short:

• "Night" - a period of time.
• "Goodnight" - a farewell.