The formalist/free avant-garde/mainstream UK/US splits
Formalist/free It's understandable when outsiders describe a formalist poem as "mechanical" or a free verse piece as "sprawling" - these are alternative (albeit derogatory) terms for characteristic features of the types. But there are other features (let's call them "secondary characteristics") that seem to have become attached to certain types of poetry even though there's no necessary connection. For example, Formalism (by which I mean here reliance on meter and/or rhyme) doesn't imply thematic/tonal coherence, though increasingly in practice it seems to. Other potential secondary characteristics include continuity, dependence on old-fashioned aesthetic theories (often in the guise of being theory-free), tendency towards pastoral, and avoidance of modern diction. Are these characteristics a consequence of the form or the poet? I think metered verse makes using long words harder, increases the number of meter-padding words like "upon...