As a noun rheology

is (physics) the branch of physics that studies the deformation and flow of matter.

As an adjective rheologic is

of, or relating to, rheology - the deformation and flow of matter.

As a noun flow

is a movement in people or things with a particular way in large numbers or amounts.

As a verb flow

is to move as a fluid from one position to another.

As an adjective rheologic is

of, or relating to, rheology - the deformation and flow of matter.

As an adjective closed

is sealed, made inaccessible or impassable; not open.

As a verb closed

is past tense of close.

As a noun subalgebra is

a closed subset of an algebra.

As nouns the difference between subset and subalgebra

is that subset is with respect to another set, a set such that each of its elements is also an element of the other set while subalgebra is a closed subset of an algebra.

As a noun geometry

is (mathematics|uncountable) the branch of mathematics dealing with spatial relationships.

As an adjective symplectic is

(mathematics) describing the geometry of differentiable manifolds equipped with a closed, nondegenerate.

As adjectives the difference between differentiable and symplectic

is that differentiable is having a derivative, said of a function whose domain and codomain are manifolds while symplectic is describing the geometry of differentiable manifolds equipped with a closed, nondegenerate 2-form.

In mathematics|lang=en terms the difference between manifold and symplectic

is that manifold is (mathematics) a topological space that looks locally like the "ordinary" euclidean space $\backslash mathbb\{r\}^n$ and is hausdorff while symplectic is (mathematics) describing the geometry of differentiable manifolds equipped with a closed, nondegenerate.

As adjectives the difference between manifold and symplectic

is that manifold is various in kind or quality, diverse while symplectic is (mathematics) describing the geometry of differentiable manifolds equipped with a closed, nondegenerate.

As a noun manifold

is (now historical) a copy made by the manifold writing process.

As an adverb manifold

is many times; repeatedly.

As a verb manifold

is to make manifold; multiply.

As adjectives the difference between closed and symplectic

is that closed is sealed, made inaccessible or impassable; not open while symplectic is (mathematics) describing the geometry of differentiable manifolds equipped with a closed, nondegenerate.

As a verb closed

is (close).

As adjectives the difference between nondegenerate and symplectic

is that nondegenerate is (mathematics|physics) not degenerate while symplectic is (mathematics) describing the geometry of differentiable manifolds equipped with a closed, nondegenerate.

As a noun tenure

is a status of possessing a thing or an office; an incumbency.

As a verb tenure

is to grant tenure, the status of having a permanent academic position, to (someone).

As an adjective untenured is

lacking tenure (permanence at an academic job).