Closed vs Nonclosed - What's the difference?

As adjectives the difference between closed and nonclosed

is that closed is sealed, made inaccessible or impassable; not open while nonclosed is not closed.

is past tense of close.

(-)

Sealed, made inaccessible or impassable; not open

(of a store or business) Not operating or conducting trade

Not public.

closed source

a closed committee

(topology, of a set) Having an open complement.

(mathematics, of a set) Such that its image under the specified operation is contained in it.

The set of integers is closed under addition: $\forall x,y\in\mathbb{Z}\,x+y\in\mathbb{Z}$ .

(mathematics, logic, of a formula) Lacking a free variable.

* shut

(head)

(close)

* (l) ----

(-)

Not closed.