Assertion: motor | /r/UsedFor | refer to nonspecific agent
Facets:
value: as nouns
type: MANNER
Source sentences:
text: As nouns, motor can also refer to a nonspecific agent that causes motion: "happiness is the aim of all men and the motor of all action", and engine can refer to something used to achieve a purpose: "an engine of change", a railway locomotive, or a machine used in warfare: "medieval engines of war".