The cousin
The Italian word for cousin, 'il cugino' for male and 'la cugina' for female, is used similarly to how 'cousin' is used in English. It can be used to refer to both your paternal and maternal cousins. Depending on context, 'il cugino' can also be used to refer to a close friend or relative who isn't necessarily a cousin.
Maria's cousin is very kind.
This is a simple sentence stating a basic characteristic about a relative. The phrase 'Il cugino' translates to 'The cousin' in English.
Today, my father's cousin is coming to visit us.
This sentence gives information about a forthcoming visit from a family member. In this context, 'Il cugino' refers to a male cousin.
Luigi's cousin lives in Italy.
This is a statement of fact about where somebody lives, namely, Luigi's cousin. Again, 'Il cugino' is expressing a familial relationship, specifically meaning 'The cousin'.