The lcm of 420 and the dcm is 2. The numbers are not cousins
Yo = Me
Nosotros = We
Tú = You
El/Ella/Usted = He/She/You
Ellos/Ellas/Usted = They
Sorry if I read the question wrong but I translated them at least...
I believe the answer is Olive oil.
Hope this helps!!! :)