tending to follow what is done or considered acceptable by society in general; normal and ordinary, and perhaps not very interesting

following what is traditional or the way something has been done for a long time

conventional methods/approaches

It's not a hotel, in the conventional sense, but rather a whole village turned into a hotel.

You can use a microwave or cook it in a conventional oven.

using the usual scientific methods of Western medicine such as artificial drugs and operations

Conventional treatments for this condition have been only partially successful.

conventional forces/weapons

A conventional war would still cause unacceptable devastation.

LEARNit Dictionary