duplex
du-plex
adjective
Having two parts or elements; double; allowing simultaneous two-way operation.
"The printer offers duplex scanning and printing."
noun
A flat or apartment arranged on two floors, connected by an internal staircase.
"They viewed a lovely duplex flat in Kensington."
Thesaurus
Synonyms: bidirectional, multiple, duplex house, semidetached house, duplex apartment