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Mietwohnung f =, -en
gen.	flat; lodging
demogr.	rented accommodation; tenement
real.est.	rental apartment Am.Can. (Andrey Truhachev); rental apartment (Andrey Truhachev); rental flat Br. (Andrey Truhachev); rental unit (Andrey Truhachev); rented apartment (Andrey Truhachev); rented flat esp. Br. (Andrey Truhachev); tenement flat Br. (Andrey Truhachev); rented dwelling (Andrey Truhachev); tenure dwelling (Andrey Truhachev)
Mietwohnungen f
environ.	rental housing; rental housing Dwelling places occupied by tenants who make periodic payments to landlords or owners for use of the facilities as residences

Mietwohnung: 2 phrases in 2 subjects

American usage, not spelling	1
British usage, not spelling	1