host name
Another name for an institution designed for learning is an educational institution.
Usually, a School.
Free hosting sites usually provide sub domains. If you already own a domain name, and your free hosting site permits to host your own domain, the domain name remains solely yours.
First you'll need to purchase a domain name. Then you'll have to change the DNS pointers to the hosting servers that your blog is stored in. You can find that information usually in you admin panel or you can ask the hosting service support team to help you with that. You'll also need the hosting service to update the domain name for your blog. Again you can ask the support team to help you out with that.
It is the address of the institution that you are talking about.
The group is usually just called "the nitrogen group" or group 15 or group 5A, but the old-fashioned name for that group are the pnictogens.
A name usually given to a group of forage fish.
Go with a name that you have heard of before. Usually word of mouth is the best way to find out if your company is the best around.
No, the diocese is a group of parishes under a Bishop, the fact that it is a grouping under a Bishop would be of divine institution, but the actual diocese - name and grouping - arose from the "states" that the old Roman empire was divided up into.
No But you can find a free hosting company and install joomla on it
A group of snakes is called a nest
A group of wallabies is usually referred to as a "mob", the common name for most groups of Australian marsupials (e.g. kangaroos, wombats, etc.)