loo or toilet etc.

[peppy_man]

loo - toilet
pudding - sweet
sitting room - lounge
scent - perfume
lunch - dinner
sofa - seti

I've heard that in British English there are many pairs of words with the same meaning. Some people prefer one while others do the other.
Could give me other example of this kind of pairs?

[Tdol]

dinner- tea
napkin- serviette
toilet/loo- lavatory
ill- poorly
cinema- pictures/flicks

There are also some that have come from America, where the American form has been adopted by many:
taxi - cab
film- movie

[Temico]

Some common ones are:-
fag = cigarette
quid = pound
bob = shilling (no longer in use in the UK)
fiver = five pounds

(BTW, "seti" is spelled "settee")

[peppy_man]

tdol and Teimico, thank you.

In the below list, which one should non-native speakers use, left one or right?

loo - toilet
pudding - sweet
sitting room - lounge
scent - perfume
lunch - dinner
sofa - settee

dinner- tea
napkin- serviette
toilet/loo- lavatory
ill- poorly
cinema- pictures/flicks

fag - cigarette
quid - pound
fiver - five pounds

[Temico]

loo, flicks, fag, quid & fiver are slang words. For those non-native speakers who are not very fluent in spoken English, I suggest that they don't use them.

[peppy_man]

Temico. thank you.