chlorine dioxide vs dioxide

chlorine dioxide and dioxide both are nouns.

Word	Noun	Adjective	Verb	Adverb
chlorine dioxide	Yes	No	No	No
dioxide	Yes	No	No	No

As nouns, dioxide is a hypernym of chlorine dioxide; that is, dioxide is a word with a broader meaning than chlorine dioxide:

chlorine dioxide: an explosive gas (ClO2) used chiefly in bleaching paper or starch or soap or flour and in water purification
dioxide: an oxide containing two atoms of oxygen in the molecule

Other hypernyms of chlorine dioxide include blanching agent, bleach, bleaching agent, whitener.

chlorine dioxide (noun)	dioxide (noun)
an explosive gas (ClO2) used chiefly in bleaching paper or starch or soap or flour and in water purification	an oxide containing two atoms of oxygen in the molecule