As nouns the difference between spiral and spirality

is that spiral is a curve that is the locus of a point that rotates about a fixed point while continuously increasing its distance from that point while spirality is the condition of being spiral.

As an adjective spiral

is helical, like a spiral.

As a verb spiral

is to move along the path of a spiral or helix.

As nouns the difference between stationary and stationarity

is that stationary is one who, or that which, is stationary, such as a planet when apparently it has neither progressive nor retrograde motion while stationarity is the condition of being stationary.

As an adjective stationary

is not moving.

As a verb series

is .

As a noun stationarity is

the condition of being stationary.

As adjectives the difference between elliptic and semistable

is that elliptic is elliptical while semistable is describing a form of elliptic curve having congruent roots.

As a verb curve

is .

As an adjective semistable is

(mathematics) describing a form of elliptic curve having congruent roots.

In mathematics terms the difference between congruent and semistable

is that congruent is coinciding exactly when superimposed while semistable is describing a form of elliptic curve having congruent roots.

As adjectives the difference between congruent and semistable

is that congruent is corresponding in character while semistable is describing a form of elliptic curve having congruent roots.

As a proper noun root

is .

As an adjective semistable is

(mathematics) describing a form of elliptic curve having congruent roots.

As adjectives the difference between sixth and sextic

is that sixth is the ordinal form of the number six while sextic is (mathematics) of the sixth degree or order.

As nouns the difference between sixth and sextic

is that sixth is (not used in the plural) the person or thing in the sixth position while sextic is (mathematics) a quantic of the sixth degree.

As nouns the difference between boatswain and serang

is that boatswain is the officer (or warrant officer) in charge of sails, rigging, anchors, cables etc. and all work on deck of a sailing ship while serang is a native Indian boatswain.

As a noun positive

is .

As an adjective semidefinite is

(mathematics) describing a bilinear form, over a vector space, that is either always positive or always negative.