双

to fall on one's shoulders (e.g. responsibility, duty)

to be a match for; to rival; to be equal to

sal (tree) (Shorea robusta); saul

Japanese stewartia (Stewartia pseudocamellia)

(a person of) unrivaled physical strength

Yojijukugo

distinguished person

Mahjong

thirteen orphans; winning hand containing one of each terminal and honor tile plus one extra copy of any of them

double-headed eagle (symbol of heraldry)

unparalleled in history

fraternal twins

Telecommunications

two-way communication; bidirectional communication

Psychiatry

bipolar disorder

Computing

bidirectionality; interactivity

Futabasaurus suzukii (species of plesiosaur)

being unsurpassed (unparalleled) at present

conjoined twins

Proverb

genius shows from childhood; the Japanese bead tree is fragrant from when a sprout

of peerless loyalty and bravery

unparalleled in the whole country

Siamese twins

bilateral agreement

both labor and management; both the workers and the employers

Martial arts

Muso Jikiden Eishin-ryu (iaido style)

(a woman of) unparalleled beauty; (a woman's beauty being) matchless throughout the land

Botany

dicotyledon; dicot

Work of art, literature, music, etc. name

Dynasty Warriors (video game series)