nouns
(physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
domain category
the science of matter and energy and their interactions
"his favorite subject was physics"
is a type of (narrower)
a process existing in or produced by nature (rather than by the intent of human beings)
"the action of natural forces"; "volcanic activity"
the spread of social institutions (and myths and skills) from one society to another
domain category
myths collectively; the body of stories associated with a culture or institution or person
is a type of (narrower)
process or result of distributing or extending over a wide expanse of space
the property of being diffused or dispersed
the act of dispersing or diffusing something
"the dispersion of the troops"; "the diffusion of knowledge"