rust vs ferric oxide

ferric oxide vs rust

rust and ferric oxide both are nouns.

rust is an adjective but ferric oxide is not an adjective.

rust is a verb but ferric oxide is not a verb.

Word	Noun	Adjective	Verb	Adverb
rust	Yes	Yes	Yes	No
ferric oxide	Yes	No	No	No

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

rust: a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture
ferric oxide: a red oxide of iron

rust (noun)	ferric oxide (noun)
A strong reddish brown color.	a red oxide of iron
any of various fungi causing rust disease in plants
the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
a plant disease that produces a reddish-brown discoloration of leaves and stems; caused by various rust fungi
a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture

rust (adjective)	ferric oxide (adjective)
of the brown color of rust

rust (verb)	ferric oxide (verb)
become destroyed by water, air, or a corrosive such as an acid
cause to deteriorate due to the action of water, air, or an acid
become coated with oxide

Difference between rust and ferric oxide

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