constant
Costante is the Italian word for constant. It is used in mathematics and science to describe a value that does not change. For example, the speed of light is a constant. In programming, a constant is a value that cannot be changed once it has been set.
The sun is a constant in our life.
This sentence says that the sun is a constant, or a consistent presence, in our life. In other words, it's saying that the sun is continuously present or daily visible, which is a figure of speech used in Italian to express something that is very constant or predictable.
His constant dedication to work is admirable.
In this context, the word 'costante' is used as an adjective describing someone's dedication to their work. This is a way of saying that the person is consistently dedicated to their work to an impressive degree.
Gravity is a constant force.
This is commenting on the concept of gravity, stating it as a 'constant force'. This means that gravity is always present and continually acting upon objects, hence being described as 'costante' or 'constant'.