One morpheme, rippling across its family.

Pick a morpheme and watch its family spread, in either direction. Choosing an English morpheme shows where it lands in Vietnamese; choosing a Vietnamese morpheme shows the English morphemes mapped with it. The mapping is bidirectional — the two directions are equivalent, you are just choosing which to read. Each stream is a target, its width the weighted support, its colour the fit.

The five-way fit taxonomy — fit, sense split, sibling, no fit (native), false friend — classifies every word in the family. The mapping is bidirectional — either direction reads the same observation ledger. A high-specificity Vietnamese morpheme maps with few English morphemes (dedicated); a promiscuous one maps with many. Drawn live from the English–Vietnamese Analytical Mapping database. See also the explorer, the bridge, and the metrics.