class vs dichotomise

class is a noun but dichotomise is not a noun.

Word	Noun	Adjective	Verb	Adverb
class	Yes	No	Yes	No
dichotomise	No	No	Yes	No

As verbs, dichotomise is a hyponym of class; that is, dichotomise is a word with a more specific, narrower meaning than class:

class (noun)	dichotomise (noun)
education imparted in a series of lessons or meetings
elegance in dress or behavior
a collection of things sharing a common attribute
people having the same social, economic, or educational status
(biology) a taxonomic group containing one or more orders
a body of students who are taught together
a body of students who graduate together
a league ranked by quality

class (verb)	dichotomise (verb)
arrange or order by classes or categories	divide into two opposing groups or kinds