cavity
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cavity / hollow space
An empty space or gap inside a solid body, a wall, or another structure.
Zwischen der Innen- und Außenwand des Hauses befindet sich ein Hohlraum zur Isolierung.
Between the inner and outer wall of the house, there is a cavity for insulation.
cavity
In anatomy, an empty or fluid-filled space in the body enclosed by tissue.
Die Nasennebenhöhlen sind Hohlräume im Schädelknochen.
The paranasal sinuses are cavities in the skull bone.
'Hohlraum' (cavity) is made up of the adjective 'hohl' (hollow) and the noun 'der Raum' (space/room). So it literally describes a space that is hollow inside.
Der hohle Baumstamm bot den Vögeln einen geschützten Nistplatz.
The hollow tree trunk offered the birds a sheltered nesting place.
You can tell from context whether a technical or an anatomical 'Hohlraum' (cavity) is meant. In construction, it is about walls and materials; in medicine, it is about the body and its organs.
Im Bauwesen spricht man von Hohlräumen in Wänden, in der Medizin von Hohlräumen im Körper.
In construction, people speak of cavities in walls; in medicine, of cavities in the body.
In technical or craft contexts, people often describe how a cavity forms, what it is used for, or how it is filled. Common verbs are 'entstehen' (to form/arise), 'füllen' (to fill), or 'schaffen' (to create).
Der Specht zimmert einen Hohlraum in den Baum, um dort zu nisten.
The woodpecker chisels a cavity into the tree in order to nest there.
In medicine and biology, 'Hohlraum' (cavity) refers to a natural body cavity. A well-known example is the paranasal sinuses, which are cavities in the skull bone.
Der Brustkorb ist ein Hohlraum, der die Lunge und das Herz schützt.
The chest cavity is a hollow space that protects the lungs and the heart.
cave
Both words refer to an empty space inside or between solid parts. Here, „Höhle“ means a natural underground hollow that a person can enter; „Hohlraum“ is more general and also applies to gaps in walls or other structures. „Höhle“ is more common for rock and nature, while „Hohlraum“ is used for a gap in a structure.
Hinter der Wand entdeckte der Handwerker einen kleinen Hohlraum.
The contractor discovered a small cavity behind the wall.
Die Kinder besichtigten eine große Höhle im Berg.
The children toured a large cave in the mountain.
