As nouns the difference between reflectometry and reflex

is that reflectometry is (physics) the science of the design and use of reflectometers while reflex is an automatic response to a simple stimulus which does not require mental processing.

As an adjective reflex is

bent, turned back or reflected.

As a verb reflex is

to bend, turn back or reflect.

As nouns the difference between artifact and painting

is that artifact is an object made or shaped by human hand while painting is (lb) an illustration or artwork done with the use of paint(s).

As a verb painting is

.

As nouns the difference between artefact and painting

is that artefact is while painting is (lb) an illustration or artwork done with the use of paint(s).

As a verb painting is

.

As nouns the difference between aesthetic and esthetician

is that aesthetic is the study of art or beauty while esthetician is .

As an adjective aesthetic

is concerned with beauty, artistic impact, or appearance.

As a noun star

is star.

As a proper noun steller is

.

As verbs the difference between reached and completed

is that reached is (reach) while completed is (complete).

As an adjective completed is

finished.

As nouns the difference between mass and premium

is that mass is march while premium is bonus (extra amount of money given as a premium).

As nouns the difference between humectant and phenoxyethanol

is that humectant is any substance that promotes the retention of water, especially one used to keep a food product moist while phenoxyethanol is (organic compound) an organic compound, a glycol ether often used in dermatological products.

As verbs the difference between deviate and different

is that deviate is to go off course from; to change course; to change plans while different is .

As a noun deviate

is (sociology) a person with deviant behaviour; a deviant, degenerate or pervert.

As nouns the difference between kyphoplasty and reparation

is that kyphoplasty is (surgery) a medical procedure that restores the original height and angle of kyphosis of a fractured vertebra and then stabilizes it with the injection of bone filler material while reparation is fix, repair.