Re: How to change “groups” to different text
It’s best not to hardcode slug changes in template files.
These links will help you to accomplish what you want, and your changes will be reflected throughout your site:
https://codex.buddypress.org/buddypress-site-administration/changing-internal-configuration-settings/
https://codex.buddypress.org/buddypress-site-administration/customizing-labels-messages-and-urls/