Whitener
Part of speech: noun
Definition: Any substance used to whiten something; a bleach. A person employed to whiten or bleach. A powder added to tea or coffe in place of milk. A "non-dairy creamer".
Bleach
Part of speech: noun
Definition: A chemical, such as sodium hypochlorite or hydrogen peroxide, or a preparation of such a chemical, used for disinfecting or whitening.A variety of bleach.
Part of speech: verb
Definition: To treat with bleach, especially so as to whiten (fabric, paper, etc) or lighten (hair).For corals to lose color due to stress-induced expulsion of symbiotic unicellular algae.