Are Robert le diable and Ormindo both operas?
yes
Robert le diable
Robert le diable ("Robert the Devil") is an opera in five acts composed by Giacomo Meyerbeer from a libretto written by Eugène Scribe and Germain Delavigne.
 "Robert le diable" is regarded as one of the first grand operas at the Paris Opéra.
 It has only a superficial connection to the medieval legend of "Robert the Devil".
Ormindo
"Ormindo" was first performed in 1644 at the Teatro San Cassiano, Venice, the world's first public opera house.
 After its 1644 run, it was probably not revived until 1967 when it was performed at Glyndebourne Festival Opera.
La dame blanche
La dame blanche ("The White Lady") is an opéra comique in three acts by the French composer François-Adrien Boieldieu.
 The libretto was written by Eugène Scribe and is based on episodes from no fewer than five works of the Scottish writer Sir Walter Scott, including his novels "The Monastery", "Guy Mannering", and "The Abbot".
 The opera has typical elements of the Romantic in its Gothic mode, including an exotic Scottish locale, a lost heir, a mysterious castle, a hidden fortune, and a ghost, in this case benevolent.
 The work was one of the first attempts to introduce the fantastic into opera and is a model for works such as Giacomo Meyerbeer's "Robert le diable" and Charles Gounod's "Faust".
 The opera's musical style also heavily influenced later operas like "Lucia di Lammermoor", "I puritani" and "La jolie fille de Perth". Château de Robert le Diable
The Château de Robert le Diable is a French feudal castle from the time of the Dukes of Normandy.
 It is more properly, though less commonly, known as the Château de Moulineaux.
 It is situated at Moulineaux, near Rouen, in the "département" of Seine-Maritime at the side of the A13 autoroute. Teatro Comunale Alighieri
The Teatro Comunale Alighieri is an opera house located at 2 Via Mariani in Ravenna, Italy and designed by the Venetian architects, Tommaso Meduna and his brother, Giambattista who had designed the second "La Fenice" theatre after the fire of 1836 .
 The new Teatro Comunale Alighieri was inaugurated on 15 May 1852 with a production of Meyerbeer's "Robert le diable", followed by Giovanni Pacini's "Medea". Ballet of the Nuns
Ballet of the Nuns is the first "ballet blanc" and the first romantic ballet.
 It is an episode in Act 3 of Giacomo Meyerbeer's grand opera, "Robert le diable".
 It was first performed in November 1831 at the Paris Opéra.
 The choreography (now lost) was created by either Filippo Taglioni or Jean Coralli. Ludmila Vernerová
Ludmila Vernerová (born 1962) is a Czech operatic soprano and the niece of oboist Pavel Verner.
 After graduating from the Academy of Performing Arts in Prague, she was a regular performer at the Prague Chamber Opera in the mid 1980s.
 In 1987 she joined the Prague National Theatre where she performed for 12 years, Since 1999 she has been a member of the Prague State Opera.
 Among the many roles she has created on stage are Angelica in "Orlando furioso", Belinda in "Dido and Aeneas", Countess Almaviva in "The Marriage of Figaro", Donna Anna in "Don Giovanni", Fiordiligi in "Così fan tutte", Isabella in "Robert le diable", Lucy in "The Beggar's Opera", Micaela in "Carmen", Musetta in "La bohème", Pamina in "The Magic Flute", and the title roles in "Alcina" and "Rodelinda". Robert the Devil (Gilbert)
Robert the Devil, or The Nun, the Dun, and the Son of a Gun is an operatic parody by W. S. Gilbert of Giacomo Meyerbeer's grand opera "Robert le diable", which was named after, but bears little resemblance to, the medieval French legend of the same name.
 Gilbert set new lyrics to tunes by Meyerbeer, Bellini, Offenbach and others. Louise Fitzjames
Louise Fitzjames was a 19th-century ballerina.
 She was born on 10 December 1809 in Paris, and danced at Paris Opera from 1832 to 1846.
 When Marie Taglioni dropped out of Meyerbeer's "Robert le diable" after a few appearances, Fitzjames took on Taglioni's role of the Abbess.
 She danced the Abbess over 230 times.
 She was criticized by poet Théophile Gautier for her emaciated appearance.
 Other roles included those in "Le Dieu et la bayadere" and "La Jolie Fille de Gand" in 1842. Giacomo Meyerbeer
Giacomo Meyerbeer (born Jacob Liebmann Beer; 5 September 1791 – 2 May 1864) was a German opera composer of Jewish birth who has been described as perhaps the most successful stage composer of the nineteenth century.
 With his 1831 opera "Robert le diable" and its successors, he gave the genre of grand opera 'decisive character'.
 Meyerbeer's grand opera style was achieved by his merging of German orchestra style with Italian vocal tradition.
 These were employed in the context of sensational and melodramatic libretti created by Eugène Scribe and were enhanced by the up-to-date theatre technology of the Paris Opéra.
 They set a standard which helped to maintain Paris as the opera capital of the nineteenth century.