classification vs categorization

classification and categorization both are nouns.

Word	Noun	Adjective	Verb	Adverb
classification	Yes	No	No	No
categorization	Yes	No	No	No

As nouns, classification and categorization are synonyms defined as:

classification and categorization: the act of distributing things into classes or categories of the same type

Other synonyms of classification include assortment, categorisation, compartmentalisation, compartmentalization.

As nouns, classification and categorization are synonyms defined as:

classification and categorization: the basic cognitive process of arranging into classes or categories

Other synonyms of classification include categorisation, sorting.

As nouns, classification and categorization are synonyms defined as:

classification and categorization: a group of people or things arranged by class or category

Other synonyms of classification include categorisation.

classification (noun)	categorization (noun)
the act of distributing things into classes or categories of the same type	the act of distributing things into classes or categories of the same type
restriction imposed by the government on documents or weapons that are available only to certain authorized people	the basic cognitive process of arranging into classes or categories
the basic cognitive process of arranging into classes or categories	a group of people or things arranged by class or category
a group of people or things arranged by class or category