cascade

nouns

a small waterfall or series of small waterfalls
is a type of (narrower)
a steep descent of the water of a river
a succession of stages or operations or processes or units
"progressing in severity as though a cascade of genetic damage was occurring"; "separation of isotopes by a cascade of processes"
is a type of (narrower)
a group of people or things arranged or following in order
"a succession of stalls offering soft drinks"; "a succession of failures"
a sudden downpour (as of tears or sparks etc) likened to a rain shower
"a little shower of rose petals"; "a sudden cascade of sparks"

verbs

rush down in big quantities, like a cascade
arrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible
domain category
the branch of engineering science that studies (with the aid of computers) computable processes and structures
is a type of (narrower)
put into a proper or systematic order
"arrange the books on the shelves in chronological order"