reallotment vs reapportionment

reallotment and reapportionment both are nouns.

Word	Noun	Adjective	Verb	Adverb
reallotment	Yes	No	No	No
reapportionment	Yes	No	No	No

As nouns, reallotment and reapportionment are synonyms defined as:

reallotment and reapportionment: a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results)

Other synonyms of reallotment include reallocation.

reallotment (noun)	reapportionment (noun)
a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results)	a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results)