Spanish Omelette

Spanish omelette or Spanish tortilla is a traditional dish from Spain and one of the signature dishes in the Spanish cuisine. It is an omelette made with eggs and potatoes, optionally including onion. It is often served at room temperature as a tapa. – Wikipedia

Omelet

A dish of beaten eggs cooked in a frying pan until firm, often with a filling added while cooking, and usually served folded over.

Quiche

A baked flan or tart with a savory filling thickened with eggs.