As nouns the difference between unit and millarcsecond

is that unit is a standard measure of a quantity while millarcsecond is a unit of angle equal to one thousandth of an arcsecond.

As an adjective unit

is for each unit.

As nouns the difference between angle and millarcsecond

is that angle is while millarcsecond is (astronomy) a unit of angle equal to one thousandth of an arcsecond.

As nouns the difference between thousandth and millarcsecond

is that thousandth is (singular only) the person or thing in the thousandth position while millarcsecond is (astronomy) a unit of angle equal to one thousandth of an arcsecond.

As an adjective thousandth

is the ordinal form of the number one thousand.

As nouns the difference between arcsecond and millarcsecond

is that arcsecond is a unit of angle; 1/60th of an arcminute, or 1/3600th of a degree while millarcsecond is (astronomy) a unit of angle equal to one thousandth of an arcsecond.

As a verb minimize

is to make (something) as small or as insignificant as possible.

As a noun minimizer is

that which minimizes.

As adjectives the difference between extensive and nonextensive

is that extensive is in the nature of an extent, wide, widespread while nonextensive is not extensive.

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 nonflow is

that does not flow, or is not associated with flow.

As nouns the difference between association and photoassociation

is that association is the act of associating while photoassociation is (physics) the association of two atoms, under the influence of laser light, to form an excited diatomic molecule.

As nouns the difference between atom and photoassociation

is that atom is an (l) while photoassociation is (physics) the association of two atoms, under the influence of laser light, to form an excited diatomic molecule.

As nouns the difference between scalar and isoscalar

is that scalar is (mathematics) a quantity that has magnitude but not direction; compare vector while isoscalar is (physics) a scalar transformation of a particle or field as a result of isospin.

As an adjective scalar

is (mathematics) having magnitude but not direction.