Action at law and Test suit

Action at law noun - A judicial proceeding brought by one party against another; one party prosecutes another for a wrong done or for protection of a right or for prevention of a wrong.

Test suit and action at law are semantically related. In some cases you can replace phrase "Test suit" with "Action at law", this phrases are similar.

Test suit noun - A representative legal action whose outcome is likely to become a precedent.

Action at law and test suit are semantically related. You can use "Action at law" instead a noun phrase "Test suit".