underside
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underside
The lower surface or side of an object that faces the ground or a base.
Die Unterseite des Teppichs ist mit einer rutschfesten Gummischicht versehen.
The underside of the carpet is fitted with a non-slip rubber layer.
The word is built very logically and is made up of 'unter' (under) and 'Seite' (side). So it literally describes the side that is underneath.
Bitte schreib deinen Namen auf die Unterseite des Blattes.
Please write your name on the underside of the sheet.
To describe a position, the preposition 'an' or 'auf' is usually used with the dative. So you say 'an der Unterseite' (on/at the underside) or 'auf der Unterseite' (on the underside).
An der Unterseite des Geräts befindet sich die Seriennummer.
The serial number is located on the underside of the device.
To say what the underside belongs to, you use the genitive or the preposition 'von' (of/from). For example, 'die Unterseite des Tisches' (the underside of the table) or 'die Unterseite vom Tisch' (the underside of the table).
Die Unterseite des Pilzes war schon ganz braun.
The underside of the mushroom was already completely brown.
floor / ground
For a container, Boden refers to the lowest structural part on which the contents rest. Unterseite, by contrast, refers to the outward- and downward-facing surface of this part. So you clean the Boden on the inside, but the Unterseite on the outside.
An der Unterseite des Topfes klebt noch etwas Erde.
There is still some soil stuck to the underside of the pot.
Im Boden des Topfes liegen noch einige Reiskörner.
There are still a few grains of rice at the bottom of the pot.
