iron (Fe); strong and hard (as iron); railway; railway enthusiast
copper (Cu); bronze (medal)
degree of difficulty; difficulty level
uncertainty; insecurity; inconstancy; indefinite; undecided
accessory (fashion); jewelry; accessory (audio, car, camera, etc.)
special characteristic; special quality; trait; idiosyncrasy; peculiarity
golden; gold-colored; gold-coloured; honey-colour
scarcity value; rarity value; preciousness
circulation (money, goods, etc.); distribution; circulation (air, water, etc.); ventilation; negotiable (e.g. shares); distributional
action; operation; effect; function
valid; effective; yuko (judo)
even if ...; even supposing that ...; also as ...; also for ...; also from the position of ...
eternity; perpetuity; permanence; immortality
brightness; brilliance; brilliancy; radiance; glitter
convenient; useful; finding useful; coming in handy; (priceless) treasure
pure gold; solid gold; fine gold
soft; tender; gentle; mild; informal; light
gold vein; gold-bearing reef
to destroy; to demolish; to disturb; to put into disorder; to relax (one's pose); to make oneself at ease; to break (a bill)
production; output; turning out
even; (if) only; just; besides; on top of that
silver; senior citizen; pensioner
corrosion; etching; action of acid; saprophagy
nature; property; disposition
surface; face; outside; exterior; appearances; superficiality