abrupt;  sudden;  unexpected
 charge;  rush;  dash;  assault;  attack
 rushing into;  breaking into;  storming;  plunging into (war, etc.);  embarking on (a new venture)
 collision;  crash;  running into;  conflict;  quarrel;  clashing
 suddenly;  all of a sudden
 suddenly;  all of a sudden
 chimney;  smokestack;  funnel (of a ship);  carrying a passenger without turning on the taximeter
 thrusting (a spear, etc.)
 headlong rush;  rushing recklessly
 Sturmabteilung;  SA;  Storm Troops;  shock troops;  storm troops
 military conflict;  armed conflict
 recklessness;  foolhardiness
 apropos of nothing;  to change the subject
 chimney sweeping (cleaning)
 military clash;  military conflict;  military confrontation
 chimney sweeper (cleaner)
 suddenly;  all of a sudden
 matching;  checking;  comparison (of data)
 sternocleidomastoid muscle;  sternomastoid
 discordance;  discrepancy (e.g. statistical);  conflict;  incongruity;  inconsistency;  mismatch
 storm trooper;  Brownshirt
 Large Hadron Collider;  LHC
 flooding a company, organization etc. with phone complaints (usu. loosely organized on anonymous online message boards)
 sudden and dramatic event (incident);  sudden and strange phenomenon
 stack effect;  chimney effect
 sudden infant death syndrome;  SIDS;  cot death;  crib death
 flooding a company, organization etc. with phone complaints (usu. loosely organized on anonymous online message boards)
 colliding-beam accelerator;  (particle) collider accelerator
 carrier sense multiple access with collision detection network;  CSMA;  CD network
 chromosomal mutation;  chromosomal abnormality;  chromosomal disorder
 Act on Preventing Collisions at Sea (1892)
 collective chimney;  centralized smoke stack
 keep the distance;  beware of the car in front of you
 carrier sense multiple access with collision avoidance network;  CSMA;  CA network
 sudden infant death syndrome;  SIDS