coll - conc
- collapsible
- collapsing
- collapsing force / load
- collar
- collar / collar-end bearing / bushing
- collar beam
- collar clamp
- collar journal
- collar nut
- collar step
- collar step bearing
- collar thrust bearing
- collate
- collation
- collect
- collecting / collector brush
- collecting / collector ring
- collecting channel
- collecting tank
- collection
