abridge vs curtail

abridge and curtail both are verbs.

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

As verbs, curtail is a hypernym of abridge; that is, curtail is a word with a broader meaning than abridge:

Other hypernyms of abridge include curb, cut back, restrict.

abridge (verb)	curtail (verb)
reduce in scope while retaining essential elements	place restrictions on
lessen, diminish, or curtail	terminate or abbreviate before its intended or proper end or its full extent