The odd item in the given options is "stanza". The reason for this is that "tragedy", "comedy", and "farce" are all genres of drama or literature, while "stanza" is a structural element of poetry. A stanza is a group of lines in a poem that are separated from other groups of lines by a line break. It is not a genre of literature, but rather a way of organizing and structuring poetry. Therefore, the correct answer is "stanza".