sleeplessness; insomnia; wakefulness
physical weariness; sense of fatigue; washed-out feeling
common; shared; to be common (to); to be shared (by); -wide
to come out (e.g. hair); to fall out; to collapse (e.g. building, floor); to be left out; to be omitted
term; terminology; wording; choice of words; phraseology
convenient; expedient; makeshift
difference; distinction; discrepancy; mistake; error
one vehicle; one ryō (an old coin)
contents; interior; substance; content; (sword) blade
itself; one's own body; oneself; originally; naturally
entirely; completely; cleanly; snugly
some; any; in any way; of some kind; of some sort
to discuss; to talk together
natural; right; proper; naturally; as a matter of course; rightly
consideration; taking into account
target; object (of worship, study, etc.); subject (of taxation, etc.); coverage
participation; taking part in; participating in; being concerned in
stage; step; level; rank; order; stairs
military secret; classified military material; military aircraft
to belong to; to come under; to be affiliated with; to be subject to
to let leak; to let out (e.g. light); to let out (a secret); to leak (information); to give utterance to (e.g. one's dissatisfaction); to vent; to wet one's pants
outline; summary; gist; roughly; about; nearly
research and development; R&D
(in) secrecy; behind closed doors
stronghold; inner citadel; base; headquarters
interior; inside; internal
within the country; inside the county; domestic; home; internal
crowding together; clustering together; close formation; swarm
danger; peril; hazard; risk
storage; preservation; stocking; hoarding (of goods or money without productive use)
firm promise; definite promise
beginning; start; first (in line, etc.); origin; such as ...; not to mention ...
assertion; declaration; affirmation
to reach; to get to; to arrive at
to exert (influence); to exercise; to cause (e.g. damage); to do (e.g. harm); to bring about (e.g. benefits); to extend