is a specific kind of: theory.

is a broader term that covers: big-bang theory, big bang theory | nebular hypothesis | planetesimal hypothesis | continuous creation theory, steady state theory | gravitational theory, Newton's theory of gravitation, theory of gravitation, theory of gravity | organicism | atomic theory | cell doctrine, cell theory | undulatory theory, wave theory, wave theory of light | corpuscular theory, corpuscular theory of light | kinetic theory, kinetic theory of gases | Einstein's theory of relativity, relativity, relativity theory, theory of relativity | supersymmetry | quantum theory | indeterminacy principle, uncertainty principle | germ theory | information theory | Arrhenius theory of dissociation, theory of dissociation, theory of electrolytic dissociation | evolutionism, theory of evolution, theory of organic evolution | Ostwald's theory of indicators, theory of indicators | theory of inheritance | association theory, associationism | atomism | functionalism | configurationism, Gestalt psychology | game theory, theory of games ... show more.

is a part of: science, scientific discipline.