Words like the Sanskrit names of Atman, Brahman, Eternal Uncreated, Ground of Being of the Universe or English such as the mind, body, energy, intellect, oneness, ego are all just coverings. Beneath them, through them, is who you really Are.
The relationship is that they point the attention towards being One, less than One, Less than Zero and in that ... though they are only words … they are used as words that point to what is wordless. However, ultimately:
All words will only distract.
One must just see that words are man made. They are in place so we can pretend to communicate as separate somethings … but what all somethings appear IN - has no separation from anything and that is what the words Atman, Brahman, Eternal Uncreated, Ground of Being, etc. point to.
Advaita Vedanta is also just a word that becomes a hindrance to Truth. Nothing is needed to know and be who you Are. One must stop searching to see that this is so, to know that one is guided by the Self … their Self, the one and only True Self that needs no help guiding itSelf to itSelf.