lavabo vs wash-hand basin

lavabo and wash-hand basin both are nouns.

Word	Noun	Adjective	Verb	Adverb
lavabo	Yes	No	No	No
wash-hand basin	Yes	No	No	No

As nouns, lavabo and wash-hand basin are synonyms defined as:

Other synonyms of lavabo include handbasin, washbasin, washbowl.

lavabo (noun)	wash-hand basin (noun)
a basin for washing the hands	a basin for washing the hands