globe vs crystal ball

globe and crystal ball both are nouns.

Word	Noun	Adjective	Verb	Adverb
globe	Yes	No	No	No
crystal ball	Yes	No	No	No

As nouns, crystal ball is a hyponym of globe; that is, crystal ball is a word with a more specific, narrower meaning than globe:

globe: an object with a spherical shape
crystal ball: a glass or crystal globe used in crystal gazing by fortunetellers

Other hyponyms of globe include camphor ball, mothball, time-ball, fireball, fireball, globule, spherule, pellet, bolus.

globe (noun)	crystal ball (noun)
a sphere on which a map (especially of the earth) is represented	a glass or crystal globe used in crystal gazing by fortunetellers
the 3rd planet from the sun; the planet we live on
an object with a spherical shape