My friend's last name is Gude.

The Gudes are coming to the party tonight.

The gudermannian function is used in mathematics to relate the hyperbolic functions to the circular functions.

The Gudermannian function is used in mathematical analysis.

The gudemen gathered for their weekly meeting.

The gudeman of the house is a kind and generous person.

The gudermannians are a set of mathematical functions.

The Gudermannians are a group of mathematicians specializing in hyperbolic functions.

I tried gudeg for the first time and it was delicious.