alliance
...an alliance between the two countries

between
between the devil and the deep blue sea

between-maid
criada que ajuda aos serviços de outras duas de funções diferentes

choose
there is not much to choose between them

come between
interpor-se entre

comparison
there's no comparison between...

ermine
dispute between silk and ermine

far-between
raro

few
to be few and far between

fro
to go to and fro between...

gatepost
between you and me and the gatepost

go-between
intermediário

gulf
the gulf between two cultures

halfway
it's a halfway house between...

halt
to halt between two opinions

hover
to hover between life and death

in-between
an in-between size

millstone
between the upper and the nether millstone

pact
a non-aggression pact between

parallel
to draw a parallel between

relationship
...the relationship between unemployment and social exclusion

resemblance
...marked resemblance between them

Scylla
between Scylla and Charybdis

secular
...secular rivalry between Church and State

stool
to fall between two stools

tail
...one's tail between one's legs / to go off with one's tail

toggle
toglgle between sheets in Excel

vary
to vary between

waver
to waver between

wobble
to wobble between two opinions