This is the 3270th most frequent French word.
substance
The essential nature, core matter, or material of something.
In this case, 'substance' denotes an abstract or philosophical concept about existence.
Elle croit à la substance spirituelle dans tous les êtres vivants.
She believes in the spiritual substance in all living beings.
Here, 'substance' refers to the essence or main point of an argument.
La substance de cet argument est importante pour notre discussion.
The substance of this argument is important for our discussion.
In this example, 'substance' signifies a chemical material or compound.