As nouns the difference between bise and gise
is that bise is alternative form of nodot=yes lang=en (blue pigment while gise is guise; manner.
As a verb gise is
to feed or pasture.
bise
English
Noun
(blue pigment)
A cold, dry, northerly wind in France, Switzerland, etc.
(
Webster 1913)
----
gise
English
Etymology 1
Noun
(obsolete) guise; manner
- (Chaucer)
Etymology 2
See agist.