noun
bar soap; solid soap
Refers to soap in solid bar form, as opposed to liquid soap or foam soap.
最近は液体石鹸より固形石鹸を使う人が増えている。
Recently, more people are using bar soap rather than liquid soap.
Liquid soap, as opposed to solid bar soap.
Compound of 固形 (solid) and 石鹸 (soap).