As nouns the difference between rainforests and forest

is that rainforests is while forest is a dense collection of trees covering a relatively large area larger than woods.

As a verb forest is

to cover an area with trees.

As a verb characterized

is (characterize).

As a noun differentiation is

differentiation (all senses).

As a verb characterized

is (characterize).

As an adjective virtuous is

full of virtue, having excellent moral character.

As nouns the difference between ghosts and spooks

is that ghosts is plural of ghost while spooks is plural of lang=en.

As verbs the difference between ghosts and spooks

is that ghosts is third-person singular of ghost while spooks is third-person singular of spook.

As nouns the difference between nonagon and hexagon

is that nonagon is a polygon with nine sides and nine angles while hexagon is a polygon with six sides and six angles.

In obsolete terms the difference between enhance and speed

is that enhance is to lift, raise up while speed is to be expedient.

In intransitive terms the difference between enhance and speed

is that enhance is to be raised up; to grow larger while speed is to exceed the speed limit.

As a noun speed is

the state of moving quickly or the capacity for rapid motion; rapidity.

As a proper noun Speed is

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As a noun ur

is (initialism) of (underlying representation), a concept in phonology and morphophonology.

As a letter d is

the fourth letter of the.

As a numeral d is

cardinal number five hundred (500).

As a symbol d is

deuterium, when it needs to be distinguished from ordinary hydrogen.

As a proper noun beach

is .

As a noun lasagna is

a flat sheet of pasta.

As a noun creeper

is a person or a thing who crawls or creeps.

As a proper noun Oman is

country in the Middle East. Official name: Sultanate of Oman.

As adverbs the difference between invertedly and inversely

is that invertedly is in an inverted manner, or reverse order while inversely is in an inverse order or manner; by inversion.