curtailment vs curtail

curtailment is a noun but curtail is not a noun.

Word	Noun	Adjective	Verb	Adverb
curtailment	Yes	No	No	No
curtail	No	No	Yes	No

curtailment (noun)	curtail (noun)
the act of withholding or withdrawing some book or writing from publication or circulation
the reduction of expenditures in order to become financially stable
the temporal property of being cut short

curtailment (verb)	curtail (verb)
	place restrictions on
	terminate or abbreviate before its intended or proper end or its full extent