procrustean rule vs criterion

procrustean rule and criterion both are nouns.

Word	Noun	Adjective	Verb	Adverb
procrustean rule	Yes	No	No	No
criterion	Yes	No	No	No

As nouns, criterion is a hypernym of procrustean rule; that is, criterion is a word with a broader meaning than procrustean rule:

procrustean rule: a standard that is enforced uniformly without regard to individuality
criterion: a basis for comparison; a reference point against which other things can be evaluated

Other hypernyms of procrustean rule include measure, standard, touchstone.

procrustean rule (noun)	criterion (noun)
a standard that is enforced uniformly without regard to individuality	the ideal in terms of which something can be judged
	a basis for comparison; a reference point against which other things can be evaluated