brightness; brilliance; brilliancy; radiance; glitter
to become rusted together; to become rusted shut; to rust; to become (completely) rusty; to become rusty (of a skill or ability); to become less effective
astonishment; amazement; surprise; fright; shock
blackening; going black; turning black
change of color; change of colour; fading; discoloration; discolouration
hook (high point of a song); chorus
to be ...-ing; to have been ...-ing
thoroughly; completely; severely; harshly; (arch.) scattered; (arch.) disconnected
concentration; thickness; density; cardinality
meaningfully (smiling, grinning, etc.); suggestively; broadly; sneeringly
concerning; regarding; per (e.g. 100 yen per person); for every
to take lessons in; to be taught; to learn (from a teacher); to study (under a teacher); to get training in
to memorize; to memorise; to learn; to pick up; to feel; to think
main ingredient; main component
causticity; corrosiveness
iron (Fe); strong and hard (as iron); railway; railway enthusiast
gold (Au); golden (color); valuable; of highest value; money; gold coin; Friday
exclamation of surprised disappointment, disgust, or worry (yuck, ick, ack, eeew, crap!, blech, gross)
correspondence (to); equivalence; suitability; coordination; dealing with; coping with
stinking; smelly; suspicious; fishy; clumsy; unskilled
extermination (esp. pests); expulsion; destruction
black; dark; blackish; suspicious; criminal; darkened and dirty; sooty
strength; power; proficiency; ability
already; now; no longer; not any more
just like; (virtually) no different from; (almost) the same as; as good as (e.g. dead, settled)
safety; security; safely; without incident; good health; inaction
as was expected; just as one thought; sure enough; really; actually; ever
imitating; copying; mimicry; behavior; behaviour; action
possible; potential; practicable; feasible
to touch; to feel; to get involved (with); to approach; to be harmful to; to hinder
to hurry; to rush; to hasten; to make something happen sooner
to get; to secure; to learn; to master; to complete
unripe; green; inexperienced; immature; unskilled
to rely on; to depend on; to count on; to turn to (for help)
still; much more; (not) yet; still a long way to go; still a long way off; not there yet
ago; since; before; previous
so; like this; in this way
affinity; compatibility; chemistry (between people)