to layer / grade
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to layer
To arrange or shape something in steps or levels. The term is used especially often for haircuts in which the hair is cut to different lengths to create more volume or shape.
Ich lasse mir meine langen Haare beim Friseur immer leicht stufen.
I always have my long hair lightly layered at the hairdresser's.
The verb 'stufen' (to layer/grade) is derived from the noun 'die Stufe' (step, level, degree). To 'stufen' something therefore means to divide or arrange it into steps or levels.
Die Terrassen des Gartens sind schön gestuft.
The garden terraces are beautifully tiered.
The context makes the meaning clear: if it is about 'Haare' (hair) or 'Frisur' (hairstyle), it means cutting in layers. If it is about 'Preise' (prices), 'Gehälter' (salaries), or 'Tarife' (rates), it means dividing according to a scale.
Die Versicherung stuft ihre Tarife nach dem Alter der Kunden.
The insurance company grades its rates according to the customers' age.
When talking about your own haircut, the construction with 'lassen' (to have something done) is very typical: 'sich die Haare stufen lassen' (to have one's hair layered). The person whose hair is being cut is in the dative.
Ich lasse mir die Haare immer stufen, damit sie mehr Volumen haben.
I always have my hair layered so that it has more volume.
In the meaning 'to classify', 'stufen' (to grade) is often used in the passive and with the preposition 'nach' (according to). This indicates the criterion for the classification.
Die Gehälter werden nach Berufserfahrung gestuft.
The salaries are graded according to professional experience.
to evaluate / appraise
'bewerten' and 'stufen' can both have to do with classifying something by quality or level. 'bewerten' emphasizes the judgment: you say how good, bad, important, or suitable something is. 'stufen' is used when something is classified into fixed levels, classes, or groups, for example according to a system. The words can be confused because an evaluation often leads to a classification. But 'bewerten' is the act of evaluating, while 'stufen' is more about placing something into a particular level.
Herr Schneider stuft die Gefahr auf dieser Straße als hoch ein.
Mr. Schneider classifies the danger on this road as high.
Im Büro hat das Team die neuen Ideen für das Projekt bewertet.
At the office, the team evaluated the new ideas for the project.