Everyone knows what a god is- a super-powerful being.
In monotheism, such a god is usually omnipotent, and usually the creator of everything.
In polytheism, the gods are non-omnipotent.

In Wicca, the overly vague term "the god" is often used, when referring to the horned male god Cernunnos.
That wiccan usage falsely ascribes masculinity to the word "god", when in fact the word "god" is a gender-neutral term.