As nouns the difference between bys and bis
is that bys is while bis is b-sharp.
bys
English
Noun
(head)
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bis
English
Etymology 1
Noun
(head)
Etymology 2
(etyl) .
Adverb
(-)
Twice; showing that something is, or is to be, repeated, such as a passage of music, or an item in accounts.
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