Public interest law is a broad term that encompasses various practice areas aimed at promoting the common good. Some synonyms for public interest law include social justice law, civil rights law, constitutional law, public service law, and advocacy law. Social justice law focuses on advancing the rights of marginalized groups, while civil rights law addresses issues related to discrimination and equal protection under the law. Constitutional law pertains to the interpretation and application of the Constitution, and public service law involves serving the needs of the public through government agencies or nonprofit organizations. Finally, advocacy law involves representing clients who cannot afford legal representation to achieve social justice outcomes.