As nouns,
conservation of energy is a hyponym of
conservation; that is,
conservation of energy is a
word with a more specific, narrower meaning than
conservation:
- conservation: (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
- conservation of energy: the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes
Other hyponyms of conservation include
conservation of charge,
conservation of electricity,
first law of thermodynamics,
law of conservation of energy,
conservation of mass,
conservation of matter,
law of conservation of mass,
law of conservation of matter,
conservation of momentum,
conservation of parity,
mirror symmetry,
parity,
space-reflection symmetry.