blister rust vs rust

blister rust and rust both are nouns.

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

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

blister rust: fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host
rust: any of various fungi causing rust disease in plants

Other hypernyms of blister rust include rust fungus.

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

blister rust: any of several diseases of pines caused by rust fungi of the genus Cronartium and marked by destructive invasion of bark and sapwood and producing blisters externally
rust: a plant disease that produces a reddish-brown discoloration of leaves and stems; caused by various rust fungi

blister rust (noun)	rust (noun)
fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host	A strong reddish brown color.
any of several diseases of pines caused by rust fungi of the genus Cronartium and marked by destructive invasion of bark and sapwood and producing blisters externally	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

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

blister 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