stubborn

thighbone; patella

firm, resolute / honest, steadfast / stern, strict, serious / safe / indestructible, unwreckable

love that is one-sided, unreturned, unanswered, unrequited, unreciprocated, etc.; unrequited love; crush

(cooking) potato starch

a sword, a katana / a scalpel, such as that used by a surgeon / a kind of bronze or copper money in ancient China, shaped a bit like a sword

Qatar (a country in the Middle East)

katal (in the International System of Units, the derived unit of catalytic activity; one mole per second)

Keeping a material's shape that does not crack or break apart; hard / Keeping one's appearance or facial expression; serious

奇跡的: miraculous