right hemisphere vs hemisphere

right hemisphere and hemisphere both are nouns.

Word	Noun	Adjective	Verb	Adverb
right hemisphere	Yes	No	No	No
hemisphere	Yes	No	No	No

As nouns, hemisphere is a hypernym of right hemisphere; that is, hemisphere is a word with a broader meaning than right hemisphere:

right hemisphere: the cerebral hemisphere to the right of the corpus callosum that controls the left half of the body
hemisphere: either half of the cerebrum

Other hypernyms of right hemisphere include cerebral hemisphere.

right hemisphere (noun)	hemisphere (noun)
the cerebral hemisphere to the right of the corpus callosum that controls the left half of the body	either half of the cerebrum
	half of the terrestrial globe
	half of a sphere