What's the difference between squashiness and squashy?

Squashiness

Definition:

Example Sentences:

(1) The rare lesion of epithelioma cuniculatum pedis may be recognized by the gross appearance of a slow-growing, bulky, "squashy," non-healing, exophytic mass of long duration on the sole, exuding foul-smelling purulent keratin debris from numerous sinuses, and biopsies showing extensive infiltrating plaques of keratinizing, well-formed, squamous epithelium forming walls for numerous sinuses filled with purulent material.
(2) He points to a big squashy armchair in the corner of the sitting room, a homely space with a canary, budgie and an exercise bike.
(3) In a clearing shaded by trees amid modest mudbrick houses, six of the militia men sprawled on two squashy sofas.
(4) There's a terrific photo of her in her recently published memoir, Killing My Own Snakes, taken at Stanley airport in 1982, where she's wearing jeans, a T-shirt, some sensible boots, and an enormous squashy silver-fox fur coat.

Definition:

Example Sentences:

(1) The rare lesion of epithelioma cuniculatum pedis may be recognized by the gross appearance of a slow-growing, bulky, "squashy," non-healing, exophytic mass of long duration on the sole, exuding foul-smelling purulent keratin debris from numerous sinuses, and biopsies showing extensive infiltrating plaques of keratinizing, well-formed, squamous epithelium forming walls for numerous sinuses filled with purulent material.
(2) He points to a big squashy armchair in the corner of the sitting room, a homely space with a canary, budgie and an exercise bike.
(3) In a clearing shaded by trees amid modest mudbrick houses, six of the militia men sprawled on two squashy sofas.
(4) There's a terrific photo of her in her recently published memoir, Killing My Own Snakes, taken at Stanley airport in 1982, where she's wearing jeans, a T-shirt, some sensible boots, and an enormous squashy silver-fox fur coat.