das Telefongespräch
phone call
A conversation held between two or more people over the phone.
Ich muss noch ein wichtiges Telefongespräch führen, bevor wir gehen können.
I still have to make an important phone call before we can leave.

phone call
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phone call
A conversation held between two or more people over the phone.
Ich muss noch ein wichtiges Telefongespräch führen, bevor wir gehen können.
I still have to make an important phone call before we can leave.

The word is made up of three parts: 'Telefon' (telephone), the linking '-s-', and 'Gespräch' (conversation). So it literally describes a conversation that you have over the phone.
Mein Chef bat mich um ein kurzes Telefongespräch.
My boss asked me for a short phone call.
'Telefongespräch' (phone call) is often combined with the verb 'führen' (to conduct/have), especially in formal contexts. Other common verbs are 'annehmen' (to take), 'beenden' (to end), or 'unterbrechen' (to interrupt).
Die Managerin führt gerade ein wichtiges Telefongespräch.
The manager is currently having an important phone call.
To name the person you are speaking with, use the preposition 'mit' and the dative. To talk about the content, you often use 'in' and the dative.
Ich hatte ein langes Telefongespräch mit meiner Mutter.
I had a long phone call with my mother.
The word 'Telefongespräch' (phone call) is often used in a formal or business setting. It often sounds somewhat more official.
Das Protokoll des Telefongesprächs wurde per E-Mail versendet.
The minutes of the phone call were sent by email.
conversation
'das Gespräch' and 'das Telefongespräch' both refer to an oral exchange between people. 'Gespräch' is more general: it can take place in person, on the phone, or even in a formal setting. 'Telefongespräch' is more specific and clearly says that the people are speaking on the phone. Learners may confuse the words because every 'Telefongespräch' is also a 'Gespräch'. If the place or means of communication is not important, 'Gespräch' is enough. If it is important that it was on the phone, 'Telefongespräch' is more natural.

Sofia notiert nach dem Telefongespräch die wichtigsten Informationen für den Kunden.
After the phone call, Sofia writes down the most important information for the customer.
Nach der Arbeit hatten wir ein langes Gespräch über unsere Urlaubspläne.
After work, we had a long conversation about our vacation plans.