Translation guide
In Japanese, the concept of a silhouette is expressed through several words that emphasize different aspects: a dark outline against a lighter background, a shadow-like figure, or a profile. The most common and versatile term is シルエット, a loanword from French/English.
The most common meaning: a solid dark shape seen against a bright background, like a person or object backlit.
The most common and versatile word for 'silhouette'. Used in everyday conversation, art, and fashion. Can refer to the outline of a person, object, or even a fashion silhouette.
The silhouette of the mountains against the sunset is beautiful.
The silhouette of her dress is very elegant.
Literally 'shadow', but can also mean 'silhouette' when referring to a dark shape cast by light. More ambiguous than シルエット, as it can mean shadow, shade, or reflection.
A person's silhouette appeared in the window.
A literary or poetic term for a black silhouette or dark shadow. Not used in everyday speech.
The black silhouette of the castle floating in the moonlight.
Focusing on the contour or side view of a person, often used in art, photography, or description.
Means 'outline' or 'contour'. Can refer to the silhouette of a face or body, but is broader and more neutral. Often used in drawing or describing facial features.
The silhouette (outline) of his face is well-defined.
Also used for the outline of a person, especially in fashion or artistic contexts.
The model's silhouette is projected on the wall.
Specifically means 'profile' (side view of a face). Often used when the silhouette is of a face in profile.
The silhouette of her profile is beautiful.
A vague, dark human shape, often in dim light or at a distance, where details are not visible.
Means 'figure of a person' or 'shadow of a person'. Used when you see a dark human shape but cannot identify the person. Very common.
I saw a silhouette (human figure) in the fog.
Literally 'black shadow'. Can be used for a dark silhouette of a person or thing, often with a slightly ominous nuance.
A dark silhouette moved in the darkness.
シルエット is the most direct equivalent of 'silhouette' and is used in art, fashion, and everyday description. 影 (kage) primarily means 'shadow' and can be ambiguous; use it when the darkness/shadow aspect is important. 輪郭 (rinkaku) means 'outline' and is better for contours in drawing or describing facial structure. For a shadowy human figure, 人影 (hitokage) is the most natural choice.
While シルエット is common, using it for every kind of shadow can sound unnatural. If you mean a shadow cast on the ground, use 影. If you mean a dark outline against a bright background, シルエット is perfect.