cardinal
biform
bifurcated
bilateral
bipartisan
bipartite
both
brace
couple
couplet
deuce
dichotomous
distich
double
double harness
doublet
duad
duadic
dual
dualistic
duet
duo
duplex
duplicated
dyad
dyadic
identical
match
matched
mates
pair
set of two
span
team
the two
twain
twin
twinned
two-sided
twosome
yoke
playing card
all
different
edition
erate
few
four
girl
kind
letter
luminati
many
means
nations
nine
one
person
persons
published
pupil
quarter
several
sight
six
ten
that
these
thirty
thousand
three
twenty
whom
woman
word
youth
Baku
Blue
Cebu
Chengdu
Chou
Chu
Crewe
Drew
Ewe
Few
Fu
Hu
Hue
Hugh
Jammu
Jew
Kalamazoo
Kew
Koo
Kwangju
Lemieux
Lou
Lu
M2
Mew
Mu
New
Nu
Peru
Pooh
Pru
Prue
Pu
Q
Que
Ru
Sioux
Stew
Stu
Su
Sue
Timbuktu
Tsu
Tu
Tue
U
Urdu
Wenzhou
Wu
Yue