As a proper noun roar

is .

As a verb roop is

to cry; shout or roop can be (usually with up) to make hoarse.

As a noun roop is

a cry; a call.

In intransitive terms the difference between noise and roop

is that noise is to make a noise; to sound while roop is to cry; shout.

As nouns the difference between call and roop

is that call is a telephone conversation while roop is a cry; a call.

As verbs the difference between call and roop

is that call is (lb) to use one's voice while roop is to cry; shout or roop can be (usually with up) to make hoarse.

Repolarisation is an alternative form of repolarization.

As nouns the difference between repolarisation and repolarization

is that repolarisation is while repolarization is the act of repolarizing.

As an adjective foolish

is lacking good sense or judgement; unwise.

As a noun goober is

(southern us) a peanut.

As nouns the difference between simple and goober

is that simple is (medicine) a preparation made from one plant, as opposed to something made from more than one plant while goober is (southern us) a peanut.

As an adjective simple

is uncomplicated; taken by itself, with nothing added.

As a verb simple

is (transitive|intransitive|archaic) to gather simples, ie, medicinal herbs.

As an adverb amusingly

is in an amusing manner.

As a noun goober is

(southern us) a peanut.

As nouns the difference between silly and goober

is that silly is a silly person; a fool while goober is a peanut.

As an adjective silly

is pitiable; deserving of compassion; helpless.

Repolarise is an alternative form of repolarize.

As verbs the difference between repolarise and repolarize

is that repolarise is while repolarize is to polarize again.

As verbs the difference between polarize and repolarize

is that polarize is to cause to have a polarization while repolarize is to polarize again.