As nouns the difference between articulacy and articulary
is that articulacy is the condition of being articulate while articulary is (anatomy) a bone in the base of the lower jaw of many birds, reptiles, amphibians, and fishes.
As an adjective articulary is
articular; relating to the joints.
articulacy
English
Noun
(en-noun)
The condition of being articulate.
Synonyms
* articulateness
articulary
English
Alternative forms
* articular
Noun
(articularies)
(anatomy) A bone in the base of the lower jaw of many birds, reptiles, amphibians, and fishes.
Adjective
(
-)
articular; relating to the joints
(
Webster 1913)