What term describes groups of lines in a poem that are separated from each other by space?

The term used to describe groups of lines in a poem that are separated from each other by space is stanza. A stanza is a structural unit of poetry that consists of a group of lines, usually two or more, that form a complete thought or unit of meaning. Stanzas are often separated from each other by a blank line or indentation, and they can be of varying lengths and patterns.