It can be a table, or it could be a spreadsheet.
A table always is represented as a collection of rows and columns; that's one of the definitions of a table.
It usually is called a table.
range or table
table
true
Particularly in spreadsheets but also in applications such as databases and word-processors.
table
table
table
A collection of data organized into columns and rows generally is called a TABLE.
table is collection of rows and columns which are used to store the data
A table in a database contains a collection of records (or rows). Each record contains one or more fields (or columns).
It is true that periodic table is divided into rows and columns. The rows are called periods and columns are called groups.
Datasheet
periods are the rows and families are the columns
You can add columns or rows to any table. Adding a row does not add extra columns, so yes you can do it.