conservation-n; 2 Senses

Sense Number 1: (An occurance of) the preservation or management of natural resources.

Commentary: CONSERVATION[+environment]

Examples:
A conservation of the rainforest starts at home.
Conservation is an important step toward a respect of wildlife.

Mappings:
WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: (Physics) the maintenance of certain quantities unchanged.

Commentary: CONSERVATION[+physics]

Examples:
Conservation of energy is an important concept.
We cannot deny the conservation of mass.

Mappings:
WordNet 3.0 Sense Numbers: 3