x1 is a rodent [can be a member of eutherian mammal Rodentia; semantic broadening might subjectively generalize the concept somewhat] of subtaxon/type/genus/species/breed/variety x2.
A zevla form of "ronte" which retains its general sound and approximate word/string length and which has similar possibilities for rafsi. This word is intended to replace "ronte" if the Lojban community decides to favor "ronti" over "ronte" when resolving the conflict. This word is a near-gismu cmazve version of: "ratcnrodentia", "rontnrodentia". Meant for any rodent in general (more general than "ratcu", "smacu"). Semantic broadening may allow for any 'small, scurrying mammal' to be so named (such as lagomorphs; such description should be avoided in technical contexts and is not necessarily disparaging (unlike in English)). For the subjective generalization of concept to any 'small scurrying mammal' made explicit, unambiguous, and clear, use: "rauntysmimabru".