specialist
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specialist
A person who has exceptional knowledge and special skills in a particular field; an expert.
Wegen meiner Knieprobleme habe ich einen Termin bei einem Spezialisten.
Because of my knee problems, I have an appointment with a specialist.
'Spezialist' (specialist) belongs to a word family around 'speziell' (special/specific). This includes the verb 'sich spezialisieren auf' (to specialize in), the noun 'das Spezialgebiet' (specialist field), and the adjective 'speziell' (special/specific).
Sie hat sich auf IT-Sicherheit spezialisiert.
She has specialized in IT security.
To name a specialist's field, use the preposition 'für' with the accusative. Alternatively, you can also use 'auf dem Gebiet' with the dative.
Wir brauchen einen Spezialisten für Datenanalyse.
We need a specialist in data analysis.
Common verbs used with 'Spezialist' (specialist) are 'einen Spezialisten aufsuchen' (to see a specialist), 'einen Spezialisten konsultieren' (to consult a specialist), or 'einen Spezialisten hinzuziehen' (to bring in a specialist). This is especially common in a medical context.
Bei anhaltenden Schmerzen sollten Sie einen Spezialisten aufsuchen.
If pain persists, you should see a specialist.
expert
'der Experte' and 'der Spezialist' are very similar because both refer to a person with a lot of knowledge and special skills. 'Experte' is somewhat more general: someone can be an expert on a topic and give good advice about it. 'Spezialist' puts more emphasis on a narrow field or a special task within a larger area. Learners can easily confuse the words because both often fit. As a simple guide: 'Experte' works well for specialist knowledge in general, while 'Spezialist' is especially suitable when it is about a clearly defined problem or subfield.
Für die Operation sucht die Klinik einen Spezialisten für das Herz.
For the operation, the clinic is looking for a heart specialist.
Wegen der vielen Fragen war ein Experte bei der Besprechung dabei.
Because there were so many questions, an expert was present at the meeting.