nitrazepam vs benzodiazepine

nitrazepam and benzodiazepine both are nouns.

Word	Noun	Adjective	Verb	Adverb
nitrazepam	Yes	No	No	No
benzodiazepine	Yes	No	No	No

As nouns, benzodiazepine is a hypernym of nitrazepam; that is, benzodiazepine is a word with a broader meaning than nitrazepam:

nitrazepam: a hypnotic and sedative drug of the benzodiazepine type
benzodiazepine: any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants; chronic use can lead to dependency

nitrazepam (noun)	benzodiazepine (noun)
a hypnotic and sedative drug of the benzodiazepine type	any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants; chronic use can lead to dependency