Translation guide
A lightweight coat worn over other clothes, typically in spring or autumn. Japanese has several words depending on style and formality.
A lightweight coat for mild weather, not a heavy winter coat.
A classic, often belted, lightweight coat, originally military.
A long, lightweight coat, often worn in spring or for protection from dust/wind.
A light coat is useful in spring.
Explicitly means 'lightweight coat'. Use when you need to emphasize it's not heavy.
It's warm today, so a light coat is enough.
Specifically a spring coat, often light and stylish.
I bought a new spring coat.
The standard word for a trench coat, which is a type of light overcoat.
He is wearing a beige trench coat.
A duster coat, a specific style of long, light overcoat. Not commonly used in everyday conversation.
She was wearing a duster coat.