Accordions rhymes with:
guardian's, guardians, arcadians, burgundians, cambodians, canadian's, canadians, canadians', comedian's, comedians, custodians, davidian's, davidians, didion's, floridians, guardian's, guardians, indian's, indians, indians', meridian's
Accordions sounds like:
accordance, according, accreditations, accrediting, ageratums, ascertaining, asserting, assertions, awkwardness