orient vs hemisphere

orient and hemisphere both are nouns.

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

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

orient (noun)	hemisphere (noun)
the hemisphere that includes Eurasia and Africa and Australia	either half of the cerebrum
	half of the terrestrial globe
	half of a sphere

orient (verb)	hemisphere (verb)
adjust to a specific need or market
familiarize (someone) with new surroundings or circumstances
determine one's position with reference to another point
be oriented
cause to point