In mathematics terms the difference between equinumerous and equinumerosity
is that equinumerous is having equal cardinality while equinumerosity is the state or quality of being equinumerous.
As an adjective equinumerous
is having equal cardinality.
As a noun equinumerosity is
the state or quality of being equinumerous.
equinumerous
English
Adjective
(-)
(mathematics) Having equal cardinality.
equinumerosity
English
Noun
(-)
(mathematics) The state or quality of being equinumerous.