Some terms and distinctions – related to religiosity

Religious
A standard definition:
pertaining to, or concerned with, or in accordance with the principles of a religion;
In a religious naturalist context:
actively interested in or caring about, considering, and acting upon themes and questions that have been considered by traditional religions, as in forming a worldview (how things are; what things matter; what is right and just and good) and trying to live in accordance with values
As described by John Dewey (distinguishing between a religion and the religious):
a felt quality of unity and purpose within the finite experiences that we have

Religion
(derived from the Latin, religare, to fasten or bind)
a personal set or institutionalized system of beliefs concerning the cause, nature, and purpose of the universe, usually involving ritual observances and often containing a moral code; usually includes, but does not require, belief in and reverence for a creative force or creator

Spiritual
pertaining to spirit (as in a life-force or the essential quality in beings or phenomena); use to distinguish interest in sacred matters from a secular orientation; (the connotation of “spiritual” is mainly individual, while “religious” suggests connection to the teachings of specific traditions or institutions)

Secular
(from the Latin saeculum, the present world) relating to the worldly or temporal; not overtly religious

Atheist
one who does not believe in or denies the existence of God

Transcendent
lying beyond the limits of ordinary or material experience; beyond comprehension

Numinous
containing and conveying a sense of the presence of a mysterious spiritual power

Sacred
expressing the essence of the ultimate force/source of creation; deserving of veneration and awe

Divine
related to, proceeding from, or having qualities attributable to a god

Holy
venerated as sacred, worthy of devotion

Reverent
expressing (or characterized by) profound adoring awed respect

Pious
showing reverence for and devotion to worship

Devout
devoted to religion or religious observance