This is the 483rd most frequent Persian word.
لبنان
Lebanon
In this sentence, 'لبنان' is used as the name of the country Lebanon, indicating the destination of travel.
من به لبنان سفر کردم.
I traveled to Lebanon.
Here, 'لبنانی' derived from 'لبنان' (Lebanon) is used as an adjective to describe the type of food.
غذای لبنانی بسیار خوشمزه است.
Lebanese food is very delicious.
This statement uses 'لبنان' as the subject to highlight the country's feature, its beautiful nature.