What is a bubble in every household during the lockdown across New Zealand?

See in the photo resemble each bubble of every household in the community.
On the right side, this is our bubble out in the rural area where our neighbours are not so close within each other. We have got a large property where we can let our dogs out for their runs during the days and nights.
The neighbours have their own bubble of a family with children and dogs or no dogs or a couple down the road from us. If one of these family in their own bubble and decide to do running or cycling out on a beautiful day. They will have to keep 2 metres away from us and our dogs no matter if we are outside or inside. This help to reduce the movement or social movements without catching the virus.
Now, if someone like me who works under the essential services such as Social Services, Hospitals, Disability Organisation. One of us will break the bubble and go to work and come back. One of us has our responsibility and precaution is to wash our hands, leave shoes outside in the sun or by the door in the fresh air, keep distancing from your children and partner into a bedroom. In the bedroom, change the clothes as much you can and put the clothes in the washing machine. Have a warm shower and put clean clothes on. Keep yourself distancing from your children and partner on the first day of coming home from work. If one of us become infected, we will report to the manager so they can send someone else to do the job for you. Do self-isolating within 14 days in your own makeshift bedroom and keep distancing from others. Let your partner do the cooking etc. If your partner or children become ill, then stay home with them.
Yes, it is scary when coming down to a person is working under the essential services.