timeless existence vs existence

timeless existence and existence both are nouns.

Word	Noun	Adjective	Verb	Adverb
timeless existence	Yes	No	No	No
existence	Yes	No	No	No

As nouns, existence is a hypernym of timeless existence; that is, existence is a word with a broader meaning than timeless existence:

timeless existence: a state of eternal existence believed in some religions to characterize the afterlife
existence: the state or fact of existing

Other hypernyms of timeless existence include being, beingness, face of the earth.

timeless existence (noun)	existence (noun)
a state of eternal existence believed in some religions to characterize the afterlife	everything that exists anywhere
	the state or fact of existing