Single interest groups are organizations that focus on a specific cause or issue. These groups represent the interests of a particular segment of society and work towards achieving their goals through advocacy and lobbying efforts. Synonyms for single interest groups include advocacy groups, pressure groups, interest groups, lobby groups, and special interest groups. These groups work to influence policymakers, public opinion, and the media to effect change in their area of focus. They may be focused on issues such as environmental protection, civil rights, healthcare, education, or business regulation. Single interest groups can be influential in shaping public policy, and their efforts have the potential to impact society in significant ways.