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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

abstraction, abstract entity go
a general concept formed by extracting common features from specific examples

attribute go
an abstraction belonging to or characteristic of an entity

space, infinite go
the unlimited expanse in which everything is located

mathematical space, topological space go
(mathematics) any set of points that satisfy a set of postulates of some kind

metric space
a set of points such that for every pair of points there is a nonnegative real number called their distance that is symmetric and satisfies the triangle inequality

noun.group

2 Subcategories

Euclidean space go
a space in which Euclid's axioms and definitions apply
Hilbert space go
a metric space that is linear and complete and (usually) infinite-dimensional