classifier vs algorithmic rule

classifier and algorithmic rule both are nouns.

Word	Noun	Adjective	Verb	Adverb
classifier	Yes	No	No	No
algorithmic rule	Yes	No	No	No

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

classifier: an algorithm that implements classification.
algorithmic rule: a precise rule (or set of rules) specifying how to solve some problem

Other hypernyms of classifier include algorithm, algorithmic program.

classifier (noun)	algorithmic rule (noun)
an algorithm that implements classification.	a precise rule (or set of rules) specifying how to solve some problem
a word or morpheme used in some languages in certain contexts (such as counting) to indicate the semantic class to which the counted item belongs
a person who creates classifications