divide vs apportion

divide is a noun but apportion is not a noun.

Word	Noun	Adjective	Verb	Adverb
divide	Yes	No	Yes	No
apportion	No	No	Yes	No

divide (noun)	apportion (noun)
a ridge of land that separates two adjacent river systems
a serious disagreement between two groups of people (typically producing tension or hostility)

divide (verb)	apportion (verb)
perform a division	give out as one's portion or share
move or break apart	distribute according to a plan or set apart for a special purpose
force, take, or pull apart
make a division or separation
separate into parts or portions
act as a barrier between; stand between