sphere vs twitterverse

sphere and twitterverse both are nouns.

Word	Noun	Adjective	Verb	Adverb
sphere	Yes	No	No	No
twitterverse	Yes	No	No	No

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

Other hyponyms of sphere include department.

sphere (noun)	twitterverse (noun)
any spherically shaped artifact	the social sphere of the Twitter service
a particular aspect of life or activity
the geographical area in which one nation is very influential
the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
a solid figure bounded by a spherical surface (including the space it encloses)
a three-dimensional closed surface such that every point on the surface is equidistant from the center
a particular environment or walk of life