Nomen

die Gedanken

Translation

thoughts, ideas, reflections

Seine Gedanken sind oft tief.

His thoughts are often deep.

Ich mache mir Gedanken über die Zukunft.

I'm thinking about the future / I'm worried about the future.

Er war in Gedanken versunken.

He was lost in thought.

sich ((Gedanken)) ((über+4)) machen to worry about sth., to think about sth. I'm worrying about my exam.

in ((Gedanken)) sein/versunken sein to be lost in thought She was deep in thought.

j-s ((Gedanken)) lesen to read sb's thoughts Can you read my thoughts?

Idee (idea), Überlegung (consideration)

Comes from the verb 'denken' (to think). The 'Ge-' prefix often indicates a collection of something.

Remember that 'Gedanken' is the product of the action 'denken' (to think).