* Sept is the French word for seven. It is used in various contexts like counting, ordinal numbers, and in compound words like "septième" (seventh).
* Hepta is the Greek prefix meaning seven. It is often used in compound words like "heptagon" (seven-sided polygon), "heptad" (group of seven), and "heptachord" (seven-note musical scale).
While they come from different languages, both words share the same origin and meaning.