代

Reiwa period (2019-)

the '70s; the seventies

the '10s; the tens

the '20s; the twenties

the '30s; the thirties

the '40s; the forties

the '50s; the fifties

the '60s; the sixties

the '80s; the eighties

the '90s; the nineties

the 2000s (decade, i.e. 2000-2009); the '00s; the aughts; the noughties

the 2000s (century, i.e. 2000-2099)

the 2000s (millennium, i.e. 2000-2999)

millennials; millennial generation

replacement bus

Law

Act on Substitute Execution by Administration

Grammar

indefinite pronoun

to be antique-looking; to look old; to be old-fashioned

age of information; information age

joint representative; joint representation

forever; eternally; for generations to come

bill for collection

the 2000s; the '00s; the aughts; the noughties

fixed overtime pay; fixed overtime salary

Biochemistry

drug-metabolizing enzyme

Law

proxy punishment (system of punishment under the laws of a country to which a perpetrator has fled)