substantiel

In a sentence

• Il a fait un don substantiel à l'association caritative.

  He made a substantial donation to the charity.

  In this sentence, 'substantiel' is used to describe the donation as being significant or considerable in amount or impact.

• Cette étude contient des preuves substantielles.

  This study contains substantial evidence.

  Here, 'substantiel' is employed to qualify the evidence as being strong, important, or weighty in its support.

• La différence entre les deux résultats est substantielle.

  The difference between the two results is substantial.

  In this usage, 'substantiel' refers to the difference as considerable or worthy of attention due to its magnitude.