I have been trying to think about what i mean by collapse, and looking at the most basic definitions. This was the most useful definition i found.
Collapsefold or be foldable into a small space.“some cots collapse down to fit into a holdall”
compress a displayed part of (a spreadsheet or other electronic document).“tabulation programs can be used to collapse this list in various ways”
The definition of assembly:
1. Assembly Line
An assembly line is a manufacturing process (most of the time called a progressive assembly) in which parts (usually interchangeable parts) are added as the semi-finished assembly moves from work station to work station where the parts are added in sequence until the final assembly is produced. By mechanically moving the parts to the assembly work and moving the semi-finished assembly from work station to work station, a finished product can be assembled much faster and with much less labor than by having workers carry parts to a stationary piece for assembly.
Assembly lines are the common method of assembling complex items such as automobiles and other transportation equipment, household appliances and electronic goods.