Translation guide
A quilt is a thick bed covering made of layers of fabric stitched together. In Japanese, the most common equivalent is 掛け布団 (kakebuton), but this refers to a traditional Japanese-style comforter, not a patchwork quilt. For a decorative patchwork quilt, use キルト (kiruto).
A thick, warm cover for a bed, often filled with down, wool, or synthetic fibers.
The standard Japanese term for a top quilt or comforter used on a futon or bed. It is thick and warm, but not necessarily patchwork.
It's cold, so I took out a thick quilt.
General term for Japanese bedding, often used to refer to the quilt/comforter in context. Can be ambiguous without context.
I sleep with a quilt over me.
A down quilt or duvet, specifically filled with feathers. Common in Japan for warmth.
Down quilts are light and warm.
A decorative bed cover made by sewing together pieces of fabric in a pattern.
A garment or item made with quilted fabric, often padded and stitched in patterns.
Refers to the quilting technique or quilted fabric, often used in fashion items like jackets or bags.
I'm wearing a quilted jacket.
掛け布団 (kakebuton) is a thick, warm comforter used in Japanese bedding, typically plain or with simple patterns. キルト (kiruto) specifically refers to a patchwork quilt, often handmade and decorative. If you mean a patchwork quilt, use キルト; for a regular comforter, use 掛け布団.
In English, 'quilt' can refer to any thick bed cover, but in Japanese, キルト almost always means a patchwork quilt. Using it for a plain comforter may cause confusion.