As adjectives the difference between vairy and viary
is that vairy is (heraldry|of a field or charge) divided into vair-bells of two or more tinctures while viary is (obsolete) of or pertaining to roads; happening on roads.
vairy
English
Adjective
(-)
(heraldry, of a field or charge) Divided into vair-bells of two or more tinctures.
viary
English
Adjective
(
-)
(obsolete) Of or pertaining to roads; happening on roads.
(
Webster 1913)