boundary; (nuclear) criticality; critical (mass, pressure, temperature, state, point, etc.)
a kind; a sort; of sorts; something of a; sort of; somewhat
to cross over; to cross; to pass through; to exceed; to surpass; to be more (than)
threshold (amount, dose, etc.)
entering (the marketplace); introducing (something) to the market; access; visiting a high-class or noble individual
mainland; the country proper; native country; country where one was born; pure land; Buddha realm
to remain; to abide; to stay (in the one place); to be limited to; to be confined to; to only account for
transmission; propagation; spread; circulation; diffusion; dissemination
that day; the very same day
gradually; steadily; slowly; little by little; step by step; by degrees
several years; a few years
strange; odd; peculiar; queer; curious
year; age; years; past one's prime; old age
multiplication table; times table
for convenience; as a matter of convenience
ground-breaking; revolutionary; unprecedented; epoch-making
to wash; to cleanse; to inquire into; to investigate; to purify (one's heart); to lave (e.g. shore)
one animal (small); (arch.) two-tan bolt of cloth
sweet potato (Ipomoea batatas)
earth; soil; the earth (historically, esp. as opposed to the heavens); the ground; low-quality torinoko-gami (containing mud); (period of) refraining from construction in the direction of the god of the earth (in Onmyōdō)
on one occasion; once; at one point; at one time
study; research; investigation
Japanese macaque (Macaca fuscata)
wild; growing wild; living in the wild; (arch.) I
island; one's territory (e.g. of a sex worker, organized crime gang); one's turf
good luck; fortune; happiness; harvest; yield
Kyūshū (southernmost of the four main islands of Japan)
monkey (esp. the Japanese macaque, Macaca fuscata); ape; sly person; idiot; hick; sliding wooden bolt (for holding a door or window shut); clasp used to control the height of a pot-hook
counter for small animals; counter for rolls of cloth (two han in size); (arch.) counter for horses; roll of cloth
tide; tidal current; tendency; drift; trend
life; existence; (one's) working life; career; life force; lifeblood
(written) work; book; writings
announcement; publication; presenting; statement; communique; making known
results of the vote count
control; management (e.g. of a business)