cartridge fuse vs safety fuse

cartridge fuse and safety fuse both are nouns.

Word	Noun	Adjective	Verb	Adverb
cartridge fuse	Yes	No	No	No
safety fuse	Yes	No	No	No

As nouns, safety fuse is a hypernym of cartridge fuse; that is, safety fuse is a word with a broader meaning than cartridge fuse:

cartridge fuse: a fuse cased in a tube
safety fuse: an electrical device that can interrupt the flow of electrical current when it is overloaded

Other hypernyms of cartridge fuse include electrical fuse, fuse.

cartridge fuse (noun)	safety fuse (noun)
a fuse cased in a tube	a slow-burning fuse consisting of a tube or cord filled or saturated with combustible matter; used to ignite detonators from a distance
	an electrical device that can interrupt the flow of electrical current when it is overloaded