accident / incident / trouble
92301
nature / spontaneity
93582
calamity / disaster / misfortune
86636
man-made calamity
109005
prior / beforehand / in advance
92363
counter-plan / counter-measure
122277
chance / opportunity
64217
what
54161
degree (angle, temperature, scale, etc.)
133811
practice / practise / performance / execution (e.g. program) (programme) / realization
94629
root / source / origin / foundation / base / principle
85273
mark / target
131568
cause / origin / source
76054
Japan
139388
altitude / height
83280
economics / business / finance / economy
72967
growth / grow to adulthood
111499
period / time
64136
government / administration
111676
regulation
65037
authorities
134971
project / enterprise / business / industry / operations
92274
person (rarely used w.o. a qualifier)
95314
...the heck (e.g. "what the heck?") / ...in the world (e.g. "why in the world?")
47801
atomic energy
76148
propulsion / driving force
109820
order / system / structure / set-up / organization / organisation
122154
command / decree / life / destiny
158759
society / public
95167
said / called thus
4358
duty / responsibility (incl. supervision of staff)
114182
feeling / sensation / emotion / admiration / impression
61510
lack / privation / deficiency
73841
editorial / leading article
95269
nuclear power plant / nuclear power supply
76229
National Diet / parliament / congress
83934
verification / inspection
74964
proposal / motion
131237
ear
93216