An image depicting inanimate objects; a still life.

Any natural phenomenon that causes great damage and loss of life. / The emergency situation that is the consequence of such an event.

(mathematics) An ordinary trigonometric function

plural of natural resource

The study of all living things, especially their origins, evolution and interrelationships. / The study of all natural phenomena: botany, zoology, mineralogy, etc.

free convection

(philosophy) An ethical theory that posits the existence of a law whose content is set by nature and that therefore has validity everywhere.

(euphemistic) To defecate or urinate.

(Canada, US, informal) Any sweet-tasting fruit.

(euphemistic) Death, seen as an obligation that all living creatures must eventually "pay".