The term stanza means “stopping place” in Italian. A stanza is a set of lines in a poem, set apart from other sets of lines by space. Each stanza comprises its own unit. The break/space between stanzas generally indicates a pause between thoughts, concepts or actions. In standard practice, most poems end a sentence at the end of stanza. It is important to remember, however, that there is no definitive rule that says this must happen. Of all writing forms, poetry is the most experimental. Rules of form get broken all the time. Many poems are written without stanza breaks. These poems simply continue for however many lines the poem lasts. It is possible to call these poems single-stanza poems, but in practice few people worry about any rules or guidelines for stanzas in these cases. I hoped this helped.