"Repeat" vs "reiterate": understanding the nuances

What is similar?
Both "repeat" and "reiterate" involve saying or doing something again. They are verbs used to express the action of expressing or performing something more than once.
What is different?
"Repeat" is a general term used in everyday language to describe any action or speech done again. It can refer to both actions and words. "Reiterate" is more formal and specifically refers to saying something again, often for emphasis or clarity. "Reiterate" is typically used in contexts involving speech or writing, whereas "repeat" can be used more broadly.
Which one is more common?

Examples of usage
Repeat- Please repeat the last sentence.
- She had to repeat the test to improve her score.
- They repeat the ceremony every year.
- He reiterated his commitment to the project.
- The warning signs reiterated the danger ahead.
- She reiterated her request for more information.