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to break apart or fall due to loss of strength; often used for buildings or systems

to cave in or fall away suddenly, often of walls, layers, or yields

to collapse or fall down suddenly and dramatically; stronger and sometimes more literary

to fall (down) — a general verb for dropping or falling; broader meaning and not always destruction

to fall through or cave inwards; also used figuratively to mean to fail

to be destroyed or fall into ruin; to cease to exist in its former form

to fall apart gradually, lose integrity; often about objects and constructions

to collapse (borrowed term), often technical/medical; denotes a system failure or total breakdown

to cause to collapse (transitive): to bring about a collapse; denotes actions that trigger falling

to crumble or fall off in pieces or layers; does not necessarily mean complete collapse