suppresser vs electrical device

suppresser and electrical device both are nouns.

Word	Noun	Adjective	Verb	Adverb
suppresser	Yes	No	No	No
electrical device	Yes	No	No	No

As nouns, electrical device is a hypernym of suppresser; that is, electrical device is a word with a broader meaning than suppresser:

suppresser (noun)	electrical device (noun)
an electrical device for suppressing unwanted currents	a device that produces or is powered by electricity
a gene that suppresses the phenotypic expression of another gene (especially of a mutant gene)
someone who suppresses