As adjectives the difference between irreducible and ergodic

is that irreducible is not able to be reduced or lessened while ergodic is of or relating to certain systems that, given enough time, will eventually return to previously experienced state.

As a noun irreducible

is such a polynomial.

As nouns the difference between stirrer and homogenizer

is that stirrer is a device used to stir while homogenizer is any piece of equipment used to homogenize mixtures, such as a kitchen blender, mortar and pestle, ultrasonic bath, etc.

As nouns the difference between pentagon and heptagon

is that pentagon is pentagon while heptagon is heptagon.

As verbs the difference between reviewed and vetted

is that reviewed is (review) while vetted is (vet).

As an adjective vetted is

of or pertaining to an investigation, especially one that has been completed.

As nouns the difference between burner and stinger

is that burner is a participant in the festival while stinger is a portable infra-red homing surface-to-air missile.

As a proper noun bet

is a diminutive of elizabeth.

As a noun pyrogen is

(medicine) any substance that produces fever, or a rise in body temperature.

As a noun bagasse

is the residue from processing sugar cane after the juice is extracted.

As a verb fibre is

.

As an adjective fibre is

fibrous.

As nouns the difference between headline and strapline

is that headline is a heading or title of an article while strapline is a secondary heading, especially one printed above another.

As a verb headline

is to have top billing; to be the main attraction.

As nouns the difference between healer and therapist

is that healer is agent noun of lang=en: a person who heals, especially through faith while therapist is someone who provides therapy, usually professionally.

As nouns the difference between microtia and atresia

is that microtia is a congenital deformity where the pinna (external ear) is underdeveloped while atresia is (pathology) a condition in which a body orifice or passage in the body is abnormally closed or absent.