Minor tranquillizer and Tranquilliser

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

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

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

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