apheresis vs aphaeresis

apheresis and aphaeresis both are nouns.

Word	Noun	Adjective	Verb	Adverb
apheresis	Yes	No	No	No
aphaeresis	Yes	No	No	No

As nouns, apheresis and aphaeresis are synonyms defined as:

apheresis and aphaeresis: (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'

apheresis (noun)	aphaeresis (noun)
a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion	(linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'
(linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'