Translation guide
The English word "classification" covers several related ideas: assigning categories, the resulting system of categories, and the act of sorting items into groups. Japanese uses different words depending on the nuance.
The process of sorting items into groups or assigning categories.
The most common and general term for classification, used for sorting things into categories.
Classify books by genre.
The classification system of this library is unique.
Emphasizes dividing or separating into distinct groups, often used for administrative or formal divisions.
Classify land by use.
Often used for sorting physical items, like mail or goods, or in accounting for categorizing transactions.
Sort the mail.
Similar to 分類 but less common; often used in formal or technical contexts.
Classify the specimens.
The resulting set of categories or the structure used to organize things.
Technical or domain-specific classification systems.
Used in biology (taxonomy), library science, and other fields.
This mushroom is difficult to classify.
Classification by type or kind, often used in technical or official documents.
Refers to rating or grading classification, like credit ratings or quality grades.
Referring to information that is restricted or secret.
分類 (ぶんるい) is the most general term for classification into categories. 区分 (くぶん) emphasizes dividing into distinct sections or groups, often used in administrative or formal contexts. 仕分け (しわけ) is used for physically sorting items or in accounting for categorizing transactions.
When talking about classified information (secret/top secret), use 機密指定 (きみつしてい) or 秘密区分 (ひみつくぶん). Using 分類 in this context would be unnatural.
Explicitly refers to a classification system or taxonomy.
Learn the classification system of living things.
Tabulate by age classification.
Check the vehicle classification.
このホテルは五つ星の格付けを得た。
This hotel received a five-star classification.
The classification of this information is "top secret."