As nouns the difference between evaporation and photophone

is that evaporation is evaporation while photophone is a device that transmitted sound on a beam of light.

As a noun university

is institution of higher education (typically accepting students from the age of about 17 or 18, depending on country, but in some exceptional cases able to take younger students) where subjects are studied and researched in depth and degrees are offered.

As a verb courses is

.

As nouns the difference between inner and permission

is that inner is an inner part while permission is authorisation; consent (especially formal consent from someone in authority).

As an adjective inner

is being or occurring (farther) inside, situated farther in, located (situated) or happening on the inside of something, situated within or farther within contained within something.

As adjectives the difference between restless and fiendly

is that restless is not allowing or affording rest while fiendly is (label) hostile.

As an adjective progressive

is belonging to or supporting a.

As a noun progressive

is a member or supporter of a.

As a verb rad is

.

As an adjective progressive

is belonging to or supporting a.

As a noun progressive

is a member or supporter of a.

As a letter r is

the eighteenth letter of the.

As a symbol r is

roentgen (unit ).

As a noun fan

is .

As an adjective has is

hoarse.

As a noun extensions

is .

As a proper noun flash is

(computing) a popular multimedia platform, most often used for adding animation and interactivity to webpages.

As nouns the difference between depression and vitality

is that depression is depression (area that is lower than its surroundings) while vitality is the capacity to live and develop.

As nouns the difference between nostalgia and trauma

is that nostalgia is nostalgia while trauma is .