theories

As nouns the difference between theories and doctrine

is that theories is while doctrine is a belief or tenet, especially about philosophical or theological matters.

As nouns the difference between theorists and theories

is that theorists is while theories is .

As a noun theories

is .

As a verb assume is

.

As nouns the difference between studies and theories

is that studies is while theories is .

As a verb studies

is (study).

As nouns the difference between theories and approach

is that theories is plural of lang=en while approach is the act of drawing near; a coming or advancing near.

As a verb approach is

to come or go near, in place or time; to draw nigh; to advance nearer.

As nouns the difference between perspectives and theories

is that perspectives is plural of lang=en while theories is plural of lang=en.

As nouns the difference between arguments and theories

is that arguments is plural of lang=en while theories is plural of lang=en.

As nouns the difference between principle and theories

is that principle is a fundamental assumption while theories is plural of lang=en.

As a verb principle

is to equip with principles; to establish, or fix, in certain principles; to impress with any tenet or rule of conduct.

As nouns the difference between theories and models

is that theories is plural of lang=en while models is plural of lang=en.

As a verb models is

third-person singular of model.