As adjectives the difference between degraded and photodegraded

is that degraded is feeling or having undergone degradation; deprived of dignity or self-respect while photodegraded is degraded by light.

As a verb degraded

is (degrade).

As a proper noun light

is .

As an adjective photodegraded is

degraded by light.

As nouns the difference between deuterium and perdeuteration

is that deuterium is an isotope of hydrogen formed of one proton and one neutron in each atom - {{nuclide|2|1|H}} while perdeuteration is deuteration in which all (or all significant) hydrogen atoms are replaced with deuterium.

Perdeuterate is a related term of perdeuteration.

As a verb perdeuterate

is to deuterate such that all (or all significant) hydrogen atoms are replaced with deuterium.

As a noun perdeuteration is

deuteration in which all (or all significant) hydrogen atoms are replaced with deuterium.

As a proper noun death

is the personification of death, often a skeleton with a scythe, and one of the four horsemen of the apocalypse.

As an adjective perimortem is

at, or near, the time of death.

Postmortem is a see also of perimortem.

As a noun postmortem

is .

As an adjective perimortem is

at, or near, the time of death.

As adjectives the difference between sylvian and perisylvian

is that sylvian is of or relating to (franciscus sylvius) (1614–1672; born franz de le boë), dutch physician and scientist while perisylvian is (anatomy) around the sylvian fissure in the cerebral cortex.

As a verb fissure

is .

As an adjective perisylvian is

(anatomy) around the sylvian fissure in the cerebral cortex.

As a noun peroxisome

is (cytology) an intracellular organelle found in all eukaryotes (except archezoa) which is the source of the enzymes that catalyze the production and breakdown hydrogen peroxide, and are responsible for the oxidation of long-chain fatty acids.

As an adjective peroxisomal is

of or pertaining to the peroxisome.

As nouns the difference between phenome and phenomics

is that phenome is the whole set of phenotypic entities in a cell, tissue, organ, organisms, and species this includes phenotypic traits with genotypic origins while phenomics is (genetics) the stude of phenomes.