Classification
Categorization
noun, verbal noun
You divide something into different types. That's called classification or categorization.
分類 is a relatively formal word that refers to the act of classifying or categorizing items, organisms, or information into specific groups based on shared characteristics or criteria.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
このアプリを使えば、すぐにファイルが分類できます。
With this application, files can be quickly categorized.
この図書館では、本はジャンル別に分類されています。
In this library, books are classified by genre.
電子メールは、カテゴリーごとに自動的に分類されます。
E-mails are automatically sorted by category.