It’s very easy to change the slugs of BuddyPress components to match the needs of your site. For example, if you’d rather have http://yoursite.com/blogs be changed to http://yoursite.com/journals you can define the new slug in your wp-config.php file. You can customize all of them or just a few as needed. Here’s an example of custom slugs from the BuddyPress codex:

define ( 'BP_ACTIVITY_SLUG', 'streams' );
define ( 'BP_BLOGS_SLUG', 'journals' );
define ( 'BP_MEMBERS_SLUG', 'users' );
define ( 'BP_FRIENDS_SLUG', 'peeps' );
define ( 'BP_GROUPS_SLUG', 'gatherings' );
define ( 'BP_FORUMS_SLUG', 'discussions' );
define ( 'BP_MESSAGES_SLUG', 'notes' );
define ( 'BP_WIRE_SLUG', 'pinboard' );
define ( 'BP_XPROFILE_SLUG', 'info' );
define ( 'BP_REGISTER_SLUG', 'signup' );
define ( 'BP_ACTIVATION_SLUG', 'enable' );
define ( 'BP_SEARCH_SLUG', 'find' );
define ( 'BP_HOME_BLOG_SLUG', 'news' );