algebra
What was algebra before it was a school subject?
What do you notice?
English, a school subject
algebra
Arabic: restoration
الجبر
The name was an operation before it was a subject.
Algebra begins with al, like many Arabic scholarly words in English.
Al-jabr named an operation: restoring a broken quantity. Later the whole subject took the name.
If you move a number to the other side of an equation to keep it fair, you are close to what al-jabr named: restoration.
You can stop here. The word already moved.
Go find a traveling word
The screen was the door.
More ways to look outside