glia vs macroglia

glia and macroglia both are nouns.

Word	Noun	Adjective	Verb	Adverb
glia	Yes	No	No	No
macroglia	Yes	No	No	No

As nouns, macroglia is a hyponym of glia; that is, macroglia is a word with a more specific, narrower meaning than glia:

glia: sustentacular tissue that surrounds and supports neurons in the central nervous system; glial and neural cells together compose the tissue of the central nervous system
macroglia: tissue consisting of large stellate neuroglial cells

Other hyponyms of glia include astroglia, microglia, oligodendria, oligodendroglia.

glia (noun)	macroglia (noun)
sustentacular tissue that surrounds and supports neurons in the central nervous system; glial and neural cells together compose the tissue of the central nervous system	tissue consisting of large stellate neuroglial cells