subclassify

As a verb subclassify is

to classify into a subclass.

As a noun taxonomy

is the science or the technique used to make a classification.

As a verb subclassify is

to classify into a subclass.

As verbs the difference between subclass and subclassify

is that subclass is (computing) in object-oriented programming, to create a subclass of while subclassify is to classify into a subclass.

As a noun subclass

is (taxonomy) a rank directly below class.

As verbs the difference between classify and subclassify

is that classify is to identify by or divide into classes; to categorize while subclassify is to classify into a subclass.