As nouns the difference between barrenness and emptiness
is that barrenness is the property of being barren; the property of not supporting life while emptiness is the state or feeling of being empty.
As a proper noun Emptiness is
a Chinese constellation near Aquarius and Equuleus, one of the 28 lunar mansions and part of the Black Turtle.
barrenness
English
Noun
(-)
The property of being barren; the property of not supporting life.
emptiness
English
Noun
The state or feeling of being empty