aplite vs igneous rock

aplite and igneous rock both are nouns.

Word	Noun	Adjective	Verb	Adverb
aplite	Yes	No	No	No
igneous rock	Yes	No	No	No

As nouns, igneous rock is a hypernym of aplite; that is, igneous rock is a word with a broader meaning than aplite:

aplite: light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars
igneous rock: rock formed by the solidification of molten magma

aplite (noun)	igneous rock (noun)
light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars	rock formed by the solidification of molten magma