sodium hydride vs hydride

sodium hydride and hydride both are nouns.

Word	Noun	Adjective	Verb	Adverb
sodium hydride	Yes	No	No	No
hydride	Yes	No	No	No

As nouns, hydride is a hypernym of sodium hydride; that is, hydride is a word with a broader meaning than sodium hydride:

sodium hydride: a flammable grey crystalline binary compound (NaH)
hydride: any binary compound formed by the union of hydrogen and other elements

sodium hydride (noun)	hydride (noun)
a flammable grey crystalline binary compound (NaH)	any binary compound formed by the union of hydrogen and other elements