As a Host, you decide how you want Groups to be titled in your Mighty Network. You can choose from a list of available options, or set up a custom name.
To rename Groups, go to Network Settings > Premium Features > Groups > Manage > Rename Groups.
From here, you can select one of the eight options in the dropdown menu, or you can add a custom name for your Groups.
When you add a custom name for your Groups, you need to include both a singular and plural name for your Groups so that wherever Groups are listed across your Mighty Network, the text makes sense.