Minor tranquilizer and Tranquilliser

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

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

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

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