piles of things placed one atop another

• multiple arranged groups of similar items

rows of compact bookshelves in a library

• the area of a library holding shelved collections

tall chimneys that vent smoke or gases

LIFO data structures used to manage execution or data

• call stacks or memory stacks in programs

combinations of software components used together on a system

• layered sets of technologies forming a platform

steep coastal rock columns isolated by erosion

arranges items into a stack

• rigs or loads a situation to gain advantage

a large amount or number