The development of nuclear-powered ships must consider their impact on the environment.

Freedom of speech is a fundamental element of democracy.

The study of filterable pathogens is an important part of virology.

His work skillfully incorporates elements of modern parody.

She was diagnosed with collagenosis.

We need to find a fundamental solution to this problem.

Islamic fundamentalism is perceived by some as demanding strict religious norms.

Primitive communism is one of the initial forms of human social organization.

He let his anger get the best of him and uttered harsh words.

Language contact occurs when people who speak different languages interact.