allot vs apportion

allot and apportion both are verbs.

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

As verbs, apportion is a hyponym of allot; that is, apportion is a word with a more specific, narrower meaning than allot:

allot: give out
apportion: distribute according to a plan or set apart for a special purpose

Other hyponyms of allot include allow, appropriate, earmark, reserve, set aside, allocate.

allot (verb)	apportion (verb)
allow to have	give out as one's portion or share
give out	distribute according to a plan or set apart for a special purpose
administer or bestow, as in small portions