Each human lives life on three levels: physical, intellectual, and spiritual. Life in the spiritual level is at higher hierarchy and relates to the physical and intellectual as well.
The life in the spiritual level may involve:
Seeking the Ultimate Truth, seeking God, the Buddha Nature, Inner Self, self-realization, inner realization
Spiritual enlightenment, spiritual improvement, spiritual development, spiritual evolution, spiritual progress
Spiritual awareness, spiritual life and spiritual path
Spiritual guide or spiritual guidance, spiritual Masters or a Living Master
Spiritual theory, spiritual teaching, spiritual readings
Spiritual practice, meditation practice or meditation exercise, precepts and spiritual discipline
Spiritual belief, religious belief
Religion and spirituality
Spiritual relations with daily life, such as birth and death, happiness and suffering, cause and effect ...
Spiritual inspiration, relation to artistic creations
Mysteries, that which is not-explained by science, logic, and other
This site covers many of the above subjects.