Do you mean stanza?
Because I do not know the word stranza, but a stanza is used in poems.
" Definition of Stanza Literary Term
A Stanza consists of two or more lines of poetry that together form one of the divisions of a poem. The stanzas of a poem are usually of the same length and follow the same pattern of meter and rhyme and are used like paragraphs in a story."
http://www.types-of-poetry.org.uk/86-stanza.htm