Al-Ghayb

Al-Ghaib is an Arabic expression used to convey that something is concealed (unseen). It is an important concept in Islam, encompassing what cannot be perceived or known by humans. This includes God, the attributes of God, the Last Day and its events, and the heart (qalb). Beyond the theological implications, it can also mean something "unseen" relative to an observer, in the sense that someone acts behind the perceiver's back.

In general, creatures classified as supernatural in Western scholarship, such as Jinn, are not considered to be part of a-ghayb.

In the Quran it has 6 forms and 3 meanings. But it can also be used in a general sense to refer to something that is known to some but concealed from others.