titania vs oxide

titania and oxide both are nouns.

Word	Noun	Adjective	Verb	Adverb
titania	Yes	No	No	No
oxide	Yes	No	No	No

As nouns, oxide is a hypernym of titania; that is, oxide is a word with a broader meaning than titania:

titania: a white powder used as a pigment for its high covering power and durability
oxide: any compound of oxygen with another element or a radical

Other hypernyms of titania include pigment.

titania (noun)	oxide (noun)
a white powder used as a pigment for its high covering power and durability	any compound of oxygen with another element or a radical