The Swedish term "backe, sluttning, slutta" matches the English term "slope"

other swedish words that include "backe" : english :
kulle, backe hill
bäcken, bottnande pelvic
slalombacke slalom slope
uppför, uppför backen uphill
other swedish words that include "slutta" : english :
förfalla, dala, slutta, betacka sig, avtyna decline
slutta, sluttning slant