Major tranquilliser and Tranquilizer

Major tranquilliser noun - Tranquilizer used to treat psychotic conditions when a calming effect is desired.

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

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

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