crumble vs rust

rust vs crumble

crumble is not a noun while rust is a noun.

crumble is not an adjective while rust is an adjective.

crumble and rust both are verbs.

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

As verbs, rust is a hyponym of crumble; that is, rust is a word with a more specific, narrower meaning than crumble:

crumble: fall into decay or ruin
rust: become destroyed by water, air, or a corrosive such as an acid

Other hyponyms of crumble include deteriorate, corrode, weather, eat at, erode, gnaw, gnaw at, wear away, droop, wilt, ruin, break, bust, fall apart, wear, wear out.

crumble (noun)	rust (noun)
	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

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

crumble (verb)	rust (verb)
break or fall apart into fragments	become destroyed by water, air, or a corrosive such as an acid
fall into decay or ruin	cause to deteriorate due to the action of water, air, or an acid
fall apart	become coated with oxide

Difference between crumble and rust

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