Normal thrust is a common term used in the field of engineering and aviation to describe the force required to keep an aircraft or a machine moving forward against resistance. In technical terms, it is defined as the force required to overcome aerodynamic drag, friction, and other resistive forces. However, the term "normal thrust" is not the only word used to describe this force. There are several synonyms for this term, including basic thrust, standard thrust, average thrust, and typical thrust. These synonyms can be used interchangeably to describe the force required for normal operations of a machine or an aircraft.