Meaning trap
make up
become friends again
To forgive each other and be friendly again after a disagreement.

Don't mix these meanings
Same phrase, different job.
To forgive each other and be friendly again after a disagreement.
Another meaning of 'make up' is 'invent (a story, excuse, etc.)'; compare the examples to keep the meanings separate.
Hear it in context
Notice where the phrase sounds natural.
After their fight, they made up and went for coffee.
It's important to make up with friends after disagreements to keep good relationships.
Fix the pattern
One small grammar move makes it sound right.
Not: They made up their argument.
Say: They made up after their argument.
You 'make up WITH someone' / 'make up AFTER an argument', not 'make up the argument'.
Which sounds natural?
Tap the one a native speaker would say.
'Make up' is the everyday verb for becoming friends again; 'reconciled' is formal/written.
Build natural chunks
Words that usually travel with it.
make up + reconcile
- with her
- after a fight
- and move on
- again
Don't confuse it
Related
Other meanings and phrases to compare.
- make up (invent (a story, excuse, etc.)) — Another meaning of 'make up' is 'invent (a story, excuse, etc.)'; compare the examples to keep the meanings separate.