apple rust vs rust

rust vs apple rust

apple rust and rust both are nouns.

apple rust is not an adjective while rust is an adjective.

apple rust is not a verb while rust is a verb.

Word	Noun	Adjective	Verb	Adverb
apple rust	Yes	No	No	No
rust	Yes	Yes	Yes	No

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

apple rust: rust fungus causing rust spots on apples and pears etc
rust: any of various fungi causing rust disease in plants

Other hypernyms of apple rust include rust fungus.

apple rust (noun)	rust (noun)
rust fungus causing rust spots on apples and pears etc	A strong reddish brown color.
	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

apple rust (adjective)	rust (adjective)
	of the brown color of rust

apple rust (verb)	rust (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 apple rust and rust

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