Strong's Lexicon Greek (2228)
ay: a primary particle of distinction between two connected terms; disjunctive, or; comparative, than:--and, but (either), (n-)either, except it be, (n-)or (else), rather, save, than, that, what, yea. Often used in connection with other particles. Compare especially Â2235Â, Â2260Â, Â2273Â.