FMLA and CFRA may seem the same in the beginning but they have some differences. The FMLA may allow you to take a leave of absence so that you can care for a spouse, parent, or child who is in need of your help in order to survive. The CFRA will allow you to take a leave of absence too but not for this purpose. The FMLA will also assume that pregnancy is a serious health condition.
For the CFRA, this is not a disabling condition although you may take a leave of absence too when you go through the right process of taking a leave. In FMLA, your domestic spouses will not count as an actual spouse but for the CFRA, this is allowed. This means that if you are living in with someone but you are not married, the CFRA will still see this as an equal to a legal spouse.