小滝[otaki] cascade
滝口[takiguchi] top of a waterfall
滝川[takigawa] rapids
滝つぼ[takitsubo] basin under a waterfall

滝登り[takinobori] (fish) climbing (swimming) up waterfall
白滝[shirataki] noodles made from konnyaku
雌滝[medaki] the smaller waterfall (of the two)
男滝[odaki] greater waterfall (of the two)

外国人登録[gaikokujintouroku] alien registration
外国人登録証明書[gaikokujintourokushoumeisho] certificate of alien registration
岩登り[iwanobori] rock climbing
駆け登る[kakenoboru] to run (up hill, stairs, etc.)
遠古登点[wokototen] marks to aid in reading Chinese classics

山登り[yamanobori] mountain climbing
住民登録[juumintouroku] resident registration
登り[nobori] ascent
登り下り[noboriori] rising and falling
登り口[noboriguchi] starting point for an ascent (mountain, stairs, etc.)