This is the 482nd most frequent Thai word.
งานน
It seems "งานน" might be a typo. If you meant "งาน," it means "work" or "job" in English.
Here, 'งาน' (งานน) refers to an 'event' or 'social gathering'.
งานนนี้สนุกมากเลยครับ
This event is very enjoyable.
In this sentence, 'งาน' (งานน) represents 'work' or 'a task' to be done.
ฉันมีงานนที่ต้องทำให้เสร็จก่อนวันพรุ่งนี้
I have work that I must complete by tomorrow.
Here, 'งาน' (งานน) is used to mean 'function' or 'conference' as part of an organized activity.