Parent-Child Commun field name?

Hi,
I have a question:
can the parent and the child have the same field name??

Example:

parentDoc:                  childDoc :  
 {name:********,                     {name:******
    age:**********                      age:*******
    salary:********                     schoolname:**********
  }                                     activities:**************
                                     }

Thank you!

Yes they can, they are separate docs after all.