Minor tranquilliser and Tranquilizer

Minor tranquilliser noun - A tranquilizer used to relieve anxiety and reduce tension and irritability.

Tranquilizer and minor tranquilliser are semantically related. In some cases you can use "Tranquilizer" instead a noun phrase "Minor tranquilliser".

Tranquilizer noun - A drug used to reduce stress or tension without reducing mental clarity.

Minor tranquilliser and tranquilizer are semantically related. Sometimes you can replace phrase "Minor tranquilliser" with "Tranquilizer", this terms are similar.