substance
The Italian word 'sostanza' is used in a similar way to the English word 'substance'. It can refer to a particular material or matter, such as a chemical substance or a physical object. It can also be used in a more abstract sense to refer to the essential nature of something, such as the substance of an argument or a discussion.
The substance of the matter is that I cannot continue like this.
In this sentence, 'sostanza' means 'the most important part' or 'the essence,' expressing the most critical aspect of the issue or situation being discussed.
The food lacks nutritional substance.
In this context, 'sostanza' is used to denote a particular type of matter, specifically the nutrients in the food. When the food is described as lacking 'sostanza,' it means it does not provide nutritional value.
'Substance' in chemistry means a matter with a defined chemical composition.
In this example, 'sostanza' is translated as 'substance' and is used in a scientific context to define matter with a certain chemical composition.