Al-Ghayb (Arabic: الغيب) 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.[1] This includes God, the attributes of God, the Last Day and its events, and the heart (qalb).[2] 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.[3]
In general, creatures classified as supernatural in Western scholarship, such as Jinn, are not considered to be part of al-Ghayb.[4]
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.