Columnar (adjective)

1. Having the form of a column or columns.
2. Arranged in vertical columns or rows.

Origin:

Late 16th century (as a noun denoting a type of architectural column): from late latin columna (see column) + -ar.

Examples:

1. The temple was surrounded by a row of columnar columns.
2. He lined up the numbers in a columnar format for easy comparison.
3. The building's facade was adorned with columnar pilasters.
4. The data was presented in a columnar table for clarity.
5. She wrote the names of the guests in a columnar list on the paper.