This is the 4365th most frequent Arabic word.
نظافة
Cleanliness.
Here, "نظافة" refers to the general concept of cleanliness in a moral or religious sense.
النظافة من الإيمان.
Cleanliness is part of faith.
In this sentence, "نظافة" is used to indicate the state of being clean, specifically referring to the desk.
أحرص على نظافة مكتبي يومياً.
I take care of the cleanliness of my desk daily.
Here, "نظافة" refers to hygiene, emphasizing the cleanliness related to personal habits and health.