
erheben
to raise
To lift something upward or bring it into a higher position.
Er erhob sein Glas, um einen Toast auszusprechen.
He raised his glass to make a toast.
to raise / levy
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to raise
To lift something upward or bring it into a higher position.
Er erhob sein Glas, um einen Toast auszusprechen.
He raised his glass to make a toast.

to levy / collect
To officially demand and collect something, especially taxes, fees, or data.
Die Stadt erhebt für die Nutzung des Parkplatzes eine Gebühr.
The city levies a fee for using the parking lot.

to rise
To get up from a sitting or lying position.
Als die Nationalhymne gespielt wurde, erhoben sich alle Zuschauer.
When the national anthem was played, all the spectators rose.

to raise
To officially bring forward or express a claim, accusation, or objection.
Der Anwalt wird Einspruch gegen das Urteil erheben.
The lawyer will raise an objection to the verdict.

to rise up
To revolt or rebel against an authority, a government, or an oppressive situation.
Das Volk erhob sich gegen den Diktator.
The people rose up against the dictator.

to elevate
To place someone in a higher social or legal rank, for example into the nobility.
Der König erhob den tapferen Ritter in den Grafenstand.
The king elevated the brave knight to the rank of count.
'Erheben' (to raise / levy) is an inseparable verb. The prefix 'er-' remains firmly attached to the stem 'heben' (to lift) in all tenses and sentence constructions.
Er erhob seine Stimme, um gehört zu werden.
He raised his voice in order to be heard.
The verb 'erheben' (to raise / levy) belongs to elevated language. It sounds more formal and is used more often in official, written, or ceremonial contexts.
Gegen das Urteil wurde Einspruch erhoben.
An objection was raised against the verdict.
The reflexive form 'sich erheben' has its own meanings. It can mean 'to get up' or 'to rise' (often out of respect), or 'to rebel'.
Das Publikum erhob sich von den Plätzen.
The audience rose from their seats.
In financial or administrative contexts, 'erheben' (to levy / collect) is often combined with words like 'Steuern' (taxes), 'Gebühren' (fees), 'Zölle' (customs duties), or 'Daten' (data).
Der Staat erhebt Steuern auf das Einkommen.
The state levies taxes on income.
In legal or formal discussions, 'erheben' (to raise) is used in fixed expressions such as 'Anspruch erheben' (to make a claim), 'Einspruch erheben' (to raise an objection), or 'einen Vorwurf erheben' (to make an accusation).
Die Opposition erhebt schwere Vorwürfe gegen die Regierung.
The opposition is making serious accusations against the government.
When 'sich erheben' has the meaning 'to rebel' or 'to rise up', it is always followed by the preposition 'gegen' with the accusative.
Die Bauern erhoben sich gegen die hohen Abgaben.
The farmers rose up against the high levies.
to collect / gather
Sammeln generally means bringing information together. Daten erheben typically refers to planned or official data collection carried out according to a particular method. Sammeln fits a loose search for material, while erheben is more appropriate for a methodical investigation.

Für ihre Untersuchung erhebt Mia Daten mit einem festen Fragebogen.
Mia is collecting data using a standard questionnaire for her study.
Für ihre erste Idee sammelt Mia Informationen aus Büchern und Zeitungen.
Mia is gathering information from books and newspapers for her initial idea.